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20 March 2017, Volume 23 Issue 2 Previous Issue    Next Issue

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Study on Interactions between N and K Absorption in Rice 2017, 23(2): 1-4.  DOI: 10.3969/j.issn.1006-8082.2017.02.001 Abstract ( )   PDF (481KB) ( )   N and K are the most in-demand essential nutrients in rice growth. There are interactions between N and K absorption in rice. This article discussed the uptake mechanism of N and K in rice, and further discussed the interaction between N and K by analysis the effect of N on K absorption, and K on N absorption.

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Advances in Nitrous Oxide Emission and Its Reduction in Rice Field 2017, 23(2): 5-9.  DOI: 10.3969/j.issn.1006-8082.2017.02.002 Abstract ( )   PDF (601KB) ( )    Nitrous oxide is an important greenhouse gas in paddy field ecosystem and plays a vital role in the global greenhouse effect. This article deals with the generation mechanism of paddy nitrous oxide, the influencing factors of paddy nitrous oxide emissions，and technical measures taken to reduce nitrous oxide emissions as well. And from these three aspects, this article further gives an overview of research progress regarding paddy field nitrous oxide and then offers some assumptions for future research concerning reduction of paddy nitrous oxide emissions, expecting to provide a reference for the reduction of greenhouse gas emissions and nitrogen losses.

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Effects of Biuret on Seedling Rate and Albino Seedling of Rice 2017, 23(2): 10-12.  DOI: 10.3969/j.issn.1006-8082.2017.02.003 Abstract ( )   PDF (443KB) ( )   In order to study on the effects of biuret on seedling rate and leaf bleaching characteristics of rice, an experiment in cultivation pool was conducted, Zhongzheyou 1 and Yongyou 1540 as materials. The results showed that the effects of biuret on rice seedling rate and seedling growth was less when biuret content in 0～2.0%． The seedling rate significantly decreased and the seedling growth significantly inhibited when biuret content more than 4.0%, the dry matter of Zhongzheyou 1 and Yongyou 1540 were reduced by 24% and 17% respectively. The leaves of rice were more sensitive to biuret and when the application of biuret more than 2.0% caused the leaves white, mainly in the second leaf. The excessive application of biuret significantly decreased the content of total chlorophyll and the ratio of chlorophyll a/chlorophyll b. Biuret is the main cause of albino seedling in direct seedling. In the production, the compound fertilizer with low biuret was recommended.

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Study on Rice Sensory Quality Evaluation Based on Radar Chart Analysis Method 2017, 23(2): 13-17.  DOI: 10.3969/j.issn.1006-8082.2017.02.004 Abstract ( )   PDF (645KB) ( )   A new method for rice sensory quality assessment was developed by using radar chart analysis method in this paper. Gel consistency, alkali spreading value, aspect ratio, amylose content and protein content were selected as evaluating indicators in the radar chart analysis due to their relatively important influence on rice sensory quality. The radar chart was drawn with the five evaluating indicators after dimensionless processed. In order to eliminate the differences caused by the arrangement of evaluating indicators, average area and average perimeter of radar map were chosen as the feature vectors for constructing final evaluation function. The developed method was applied to assess sensory quality of 10 rice samples and compared to traditional sensory evaluation. The sensory quality ranking obtained with developed method was consistent with the traditional sensory evaluation, which indicated that the developed method is a useful method for preliminary assessment of rice sensory quality.

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Nondestructive and Rapid Determination Method of Nitrogen Content of Rice Leaves 2017, 23(2): 18-20.  DOI: 10.3969/j.issn.1006-8082.2017.02.005 Abstract ( )   PDF (367KB) ( )   The relationship of rice leaf nitrogen content, SPAD value and CCN value were studied in the experiment, with rice leaf nitrogen rapid determination instrument of CCN6000, early season indica rice zhongzao 39 as material. The results showed that the value measuring by CCN6000 and chemical analysis was similar when the flag leaf was subjected to analyzing. The leaf nitrogen content of rice leaf at panicle initiation stage from high to low was 3rd, 2nd, 1st from the top, and the correlation of the value measured by CCN6000 and SPAD were significant. With the rising of leaf position, leaf nitrogen content decreased at booting stage of rice. CCN value can be used as a basis for nondestructive and rapid determination of nitrogen content in leaves clearly.

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Rank Analysis Method Utilization on Screening Low Cadmium Rice Varieties 2017, 23(2): 21-26.  DOI: 10.3969/j.issn.1006-8082.2017.02.006 Abstract ( )   PDF (553KB) ( )   In this research, the data of 31 early rice varieties which participated in low cadmium rice varieties screening trials in the 15 selected test environments in Hunan, using non-parametric statistical methods-rank analysis to analyze and evaluate the Cd content and stability of the tested varieties comprehensively. The results showed that Liangyouzao 17 and Zhuliangyou 706, which belong to low and stable Cd content rice varieties, could be widely planted in slight pollution soil. In screening low cadmium rice varieties test, the rank analysis method is a practical and forthright analysis method evaluating the Cd content and stability of the varieties.

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Effects of Cultivation Methods on Grain Yield of Hybrid Mid-season Rice and Fertility of Logged-water Paddy Filed 2017, 23(2): 27-31.  DOI: 10.3969/j.issn.1006-8082.2017.02.007 Abstract ( )   PDF (435KB) ( )   In order to study the effects of tillage, plant density, N application and transplanting manner on grain yield of hybrid mid-season rice and fertility of logged-water paddy filed, a positioning test experiment was carried out, with hybrid mid-season rice combination Chuanxiang 9838 as material. The results showed that the yield difference of experimental treatment levels were not significant by tillage, application rate，transplanting manner, respectively, but there were highly significant difference by plant density; due to the interaction effects were significantly between experimental factors, according to the final five years of repeated variance analysis showed that the yield of 24 treatments were not significant（F=0.89）. The reason was that the dry matter production and nitrogen uptake from soil were greater of plowing, high density and high nitrogen, but the efficiency of nitrogen utilization of them were lower than those of the low-density treatments. The rice production costs can be greatly reduced under ensuring higher yield with a cultivation techniques（no-tillage, transplanting density 120 000 hiles/hm2, nitrogen fertilizer 120 kg/hm2 and same row-spacing cultivation） in all-time logged-water paddy field. The results showed that the soil fertility were higher under the tillage, high- density and high-fertilization than those of other treatments at the end of the fifth year test. But the results of the experiment after the fifth year test end showed that, the yield of plowing> the yield of no-tillage, the yield of low-density> the yield of high-density. Although the grain yield did not fall, the yield of paddy field fertility has declined after five years of continuous no-tillage with high-density planting.

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Effects of Light Intensity During Jointing Stage on Basal Internode Length of Rice 2017, 23(2): 32-37.  DOI: 10.3969/j.issn.1006-8082.2017.02.008 Abstract ( )   PDF (779KB) ( )   Internode length is one of the main traits affecting the lodging resistance of rice. Light intensity can exert a profound influence on the internode length of rice. But so far, the mechanism underling the role of light intensity on the internode elongation is not well understood. A field experiment was conducted to explore the effects of light intensity on basal internode length by artificial shading. During the stages of the 1-leaf age before jointing （S0）, the 1st internode elongation stage （S1） and the 2nd internode elongation stage （S2）, rice plants were subjected to three different light regimes: 29% of full sunlight （A）, 67% of full sunlight （B） and full sunlight （no shading, C）. In treatment A, plants were shaded with black shading nets. In treatment B, plants were shaded with white shading nets. The light intensity in the basal parts of the rice stem and the length of the 1st, 2nd and 3rd internode were measured. The results were as follows: 1） In S0 stage, the light intensity has no significant influence on the length of the 1st, 2nd and 3rd internodes. In S1 and S2 stages, the length of the elongating internodes was significantly decreased with the increasing of light intensity, while no significant impact of light intensity was found on the length of non-elongating internodes. 2） Regression analysis indicated that the light intensity was significantly and negatively correlated with the length of the elongating internode, but was not significantly correlated with the length of non-elongating internodes. For every 1 000 Lum/ft2 increase in light intensity during S1 stage, the 1st internode length was reduced by 0.5 cm, while during S2 stage, the 2nd internode length was reduced by 0.7 cm. The 2nd internode was more sensitive to the variation of light intensity compared with the 1st internode. In practice, increasing the light transmission into the basal parts of the rice canopy would be an efficient way to shorten basal internodes and improve lodging resistance.

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Effects of Different Temperature and Sunshine on Yield and Quality of Japonica Rice in Northern China 2017, 23(2): 38-40.  DOI: 10.3969/j.issn.1006-8082.2017.02.009 Abstract ( )   PDF (307KB) ( )   Using 10 japonica rice varieties of Liaoning Province as materials, an experiment of sowing and transplanting by four stages was conducted in 2014 and 2015. The influences of 4 different sowing and transplanting stages on rice yield and quality were studied. The results showed that the grain yield decreased and the protein content increased significantly with the delay of sowing date and transplanting date.

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Current Situation of Rice Production in Jiangsu Province and Technical Countermeasures for the Green and Sustainable Development under the New Circumstances 2017, 23(2): 41-44.  DOI: 10.3969/j.issn.1006-8082.2017.02.010 Abstract ( )   PDF (624KB) ( )   Rice is the major grain crop in Jiangsu Province and also the main ration crop. Some new problems and situation have appeared in the rice production under the new circumstances in Jiangsu Province, such as yield increasing but income not increasing, resources excessive consumption, ecological environment damaged and contradictions of demand and supply obviously. These affect the green and sustainable development of rice seriously. According to the thinking direction of transforming the development pattern to advance quality and efficiency, stabilizing grain yield and increasing income sustainable, and the strategy of crop production based on technological application, this article summarized the production status, analyzed the main problems of rice production in Jiangsu Province, and put forward the technical countermeasures for green and sustainable development to promote rice production capacity stability, output efficiency, product safety, and realize green and sustainable development.

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Comparative Study on Plant Type Characteristics of Different Maturity Stage Rice Cultivars in Liaoning Province 2017, 23(2): 45-49.  DOI: 10.3969/j.issn.1006-8082.2017.02.011 Abstract ( )   PDF (571KB) ( )   The plant type characteristics and their relationships of different maturity stage rice cultivars were studied in this paper, using forty cultivars as materials which participated in the rice regional trial in Liaoning Province in 2015. The results indicated that the plant type of early maturity cultivars were mainly curve panicle type（CPT）and light panicle type（LPT）, the medium mature varieties were erect panicle type （EPT） and heavy panicle type（HPT）, the late maturity varieties were semi-erect panicle type and HPT. There existed no significant differences among different maturity type rice cultivars for leaf length, leaf width showed late maturity varieties >medium maturity varieties > early maturity varieties, but the leaf base angle was opposite. The secondary branch grain rate showed early maturity varieties > medium maturity varieties > late maturity varieties. The contribution rate of secondary branch showed late maturity varieties > medium maturity varieties> early maturity varieties. The panicle type index was mainly dominated by the superior grains on the low part.

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Analysis of Yield Stability of Rice Varieties in the Second Accumulated Temperature Zone in Heilongjiang Province 2017, 23(2): 50-52.  DOI: 10.3969/j.issn.1006-8082.2017.02.012 Abstract ( )   PDF (346KB) ( )   In order to analysis the yield stability of rice varieties in the second accumulated temperature zone in Heilongjiang Province, a experiment was carried out using randomized block design in 2014, using 10 rice varieties as materials. The results showed that the yield of Suigeng 16 was less affected by the environment, the yield of Longgeng 42 was greatly influenced by the environment, but can get high yield in suitable conditions. There were some differences in the yield stability of the same species in different locations. The varieties had a better adaptability in Yanshou County, the yields of different varieties were different in Fangzheng County, but the varieties can get high yield in suitable conditions. In the 10 tested varieties, the parents of 7 varieties come from Suigeng 3 and Suigeng 4, these varieties had stable yield.

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Analysis of Climate Suitability of Late Sowing Japonica Rice in Xinyang Area 2017, 23(2): 53-56.  DOI: 10.3969/j.issn.1006-8082.2017.02.013 Abstract ( )   PDF (504KB) ( )   Based on the data of daily average temperatures, precipitation and sunshine duration in rice growth period during the past 35 years（1980-2014） in Xinyang City, calculated the climate suitability of seedling stage, tillering stage, jointing-booting stage, flowering stage and filling stage after delayed sowing of japonica rice by using the climate suitability model. The results showed that, after delayed sowing, seedling stage temperatures, precipitation and sunshine duration suitability were 0.98, 0.99 and 0.63 respectively; comprehensive climate suitability is 0.85, the degree was high; tillering stage were 0.99, 0.51 and 0.54, climate suitability was 0.65, the degree was medium; jointing-booting stage were 0.99, 0.87 and 0.67, climate suitability was 0.85, the degree was higher; flowering stage were 0.60, 0.98 and 0.57, climate suitability is 0.73, the degree was higher; filling stage were 0.60, 0.98 and 0.57, climate suitability was 0.73, the degree was higher. Climate suitability of late sowing japonica rice in Xinyang area was relatively appropriate.

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Study on Seed Emergence with Overlapped Disks in Dark Room and Rice Seedling Raising Instruction for Zhongzao 39 2017, 23(2): 57-59.  DOI: 10.3969/j.issn.1006-8082.2017.02.014 Abstract ( )   PDF (404KB) ( )   Seed emergence with overlapped disks in dark room and seedling raising in green house for super rice Zhongzao 39 with machnical transplanting were studied and extensioned in Zhuji City in 2011-2015. Its main advantages and yield increasing mechanism were confirmed by 5 years of experiment and demonstration. The instruction of seed emergence with overlapped disks in dark room and seedling raising for Zhongzao 39 was summarized in this paper.

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Analysis of Characteristics of Late-maturing Medium Indica Hybrid Rice with Fine Quality in Sichuan Province 2017, 23(2): 60-63.  DOI: 10.3969/j.issn.1006-8082.2017.02.015 Abstract ( )   PDF (400KB) ( )   Main Characteristic of 9 late-maturing medium indica hybrid rice combinations were analyzed, which was authorized by Sichuan Crop Variety Approval Committee in the 12th five-year plan. The results showed that the performance of Jingyou 127 is best in “quality, maturing period, yield and resistance”, the second is Chuanyou 6203. And for the common problem of high chalk of the 9 rice combination, the authors put forwarded some measures to decrease the chalk rice rate and chalkiness degree from grain bulk density and width-thickness ratio.

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Effects of Ultrasound on Physiological Characters, Yield and Quality of Rice Yuejingsimiao 2017, 23(2): 64-67.  DOI: 10.3969/j.issn.1006-8082.2017.02.016 Abstract ( )   PDF (473KB) ( )   A field experiment was carried out to study the effects on physilological characters, yield and quality of ultrasonic processing coated and uncoated rice seeds, taking Yuejingsimiao as materials. The results showed that ultrasonic treatment could improve the yield of rice, and the yield of ultrasonic processing coated seeds treatment was the highest, because the ultrasonic treatment increased the effective panicles, grains number per panicle and seed setting rate. What’s more, ultrasonic processing could increase SOD and POD activities and free proline contents, decrease MDA contents and improve the resistance of rice. In addition, ultrasonic treatment could also improve processing quality and appearance quality of rice.

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Preliminary Study on the Effects of Chemical Control and Cropping on Rice Field Ridges to Spiders in Rice Field 2017, 23(2): 68-70.  DOI: 10.3969/j.issn.1006-8082.2017.02.017 Abstract ( )   PDF (360KB) ( )   To find out the effects of chemical control and cropping patterns on rice field ridges to spiders in rice field, compared the amount of spider in rice field with different control methods, and analyzed the effects of crop on rice field ridges. The results showed that spiders were effectively protected through the application of green integrated management; scientific diversified cropping on rice field ridges would increase the amount of spiders in rice field.

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Effects of Nitrogen Amount on Population Quality and Grain Quality of Japonica Rice in North China 2017, 23(2): 71-74.  DOI: 10.3969/j.issn.1006-8082.2017.02.018 Abstract ( )   PDF (445KB) ( )   Nitrogen is the composition of amino acid, protein, nucleic acids, coenzyme and pigments in photosynthesis, so its nutritional status is closely related to the physical processes. The effects of nitrogen amount on population quality, yield and grain quality of japonica rice in north China were studied in this paper. The results showed that with the increasing of nitrogen application, the leaf area index, photosynthetic potential and population growth rate were promoted; the highest rice stalk number, maximum tiller number, panicle number, proportion of tillers, the head rice rate and protein content were increased gradually; the whiteness, taste value, peak viscosity, low viscosity and final viscosity were decreased. The total amount of nitrogen had little effect on amylose content.

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Effects of Different Seedling Ages on Seedling Quality and Yield of Machine Transplanted Late Season Rice Ning 84 and Yongyou 538 2017, 23(2): 75-77.  DOI: 10.3969/j.issn.1006-8082.2017.02.019 Abstract ( )   PDF (367KB) ( )   A field experiment was carried out to explore different seedling ages （18 d, 23 d and 28 d） on seedling quality, leaf age, tiller dynamic and yield performance, taking rice variety Ning 84 and Yongyou 538 as materials with machine transplanting. The results showed that the quality of seedling deteriorated significantly, the leaf number, plant height, panicle length and yield were decreased with the seedling age increasing. The yield of Ning 84 and Yongyou 538 with 23 d and 28 d seedling age were decreased by 0.86%, 12.80% and 2.67%, 14.71% than that of the 18 d seedling age. With the seedling age increasing, the maximum tiller number increased, the spike rate of Ning 84 was enhanced and Yongyou 538 was decreased. At the same seedling age, the seedling quality of Ning 84 was worse than Yongyou 538, but its maximum tiller number and spike rate were higher than Yongyou 538.

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Research of Different Sowing Date and Seedling Ages on Machine Transplanting  Super Rice H you 518 2017, 23(2): 78-81.  DOI: 10.3969/j.issn.1006-8082.2017.02.020 Abstract ( )   PDF (523KB) ( )   A field experiment was carried out about different sowing date and seedling ages on supper late rice H you 518. The results showed that H you 518 could be used as machine transplanting double cropping late rice. The optimal seedling age is 15~20 days, the latest safe sowing date is July 1, and the full heading stage should before September 18th. The higher yield would be obtained when sowing date and planting date is earlier.

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Cultivation Techniques Procedure of Industrial Matrix Seedling Raising of Rice Yongyou 1540 2017, 23(2): 82-83.  DOI: 10.3969/j.issn.1006-8082.2017.02.021 Abstract ( )   PDF (303KB) ( )   The industrial matrix seedling raising is a high-efficient and simplified rice production techniques with environmental protection and resource reuse. Based on field experiment and demonstration, field site-fixed observation and laboratory measurement, the authors explored the growth characteristics of Yongyou 1540 with industrial matrix seedling raising in Taicang City. The technical procedure of high yield cultivation were formulated.

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Benefit Analysis and Supporting Techniques for Ecological Cultivation of Japonica Rice Nangeng 9108 and Crayfish 2017, 23(2): 84-86.  DOI: 10.3969/j.issn.1006-8082.2017.02.022 Abstract ( )   PDF (443KB) ( )   This study introduced the benefit and supporting techniques for ecological cultivation of japonica rice Nangeng 9108 and crayfish in Xinghua City. The application area of this mode is about 135 hm2 each year in Xinghua City. More than 400 kg rice and over 100 kg crayfish are produced per 667 m2. It brings a net income of more than ￥ 3,000, which is six times of the wheat and rice planting pattern. Besides, this mode is an efficient and promising agriculture mode with low risk, stable high efficiency and the coordination of rice planting and crayfish aquaculture.

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Breeding and Application of New Medium Indica Hybrid Rice Combination Nei 6 you 138 with Good Quality and High Yield 2017, 23(2): 87-88.  DOI: 10.3969/j.issn.1006-8082.2017.02.023 Abstract ( )   PDF (276KB) ( )   Nei 6 you138 is a new medium indica hybrid rice combination, derived from Neixiang 6A with the blast resistance and Mianhui 138 with good quality. It has the characteristics of high yield, good grain quality, high yield of seed production. It was registered by National Crop Variety Appraisal Committee in July 2016. The breeding process, planting performance, cultivation techniques and seed production techniques of Nei 6 you 138 were introduced in this paper.

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Breeding and Cultivation Techniques of Japonica Glutious Rice Xuangengnuo 1 with Fine Quality 2017, 23(2): 89-90.  DOI: 10.3969/j.issn.1006-8082.2017.02.024 Abstract ( )   PDF (306KB) ( )   Xuangengnuo 1 is a new early-maturing late japonica glutinous rice variety, derived from the cross of 120-5 and 99-25, bred by Xuancheng Agricultural Science Institute in 2011. It was approved by Anhui Provincial Crop Variety Appraisal Committee in 2016. It has the characteristics of high and stable yield, lodging resistance, fine grain quality, cooking with faint scent, appropriate ripe period, comprehensive resistance and wide adaptability.

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Characteristics and High Yield Cultivation Techniques of Rice Jinggeng 26 2017, 23(2): 91-92.  DOI: 10.3969/j.issn.1006-8082.2017.02.025 Abstract ( )   PDF (282KB) ( )   Jinggeng 26 is a new japonica rice variety, bred by Qujing Academy of Agricultural Sciences. It has the characteristics of high yield,  fine quality, cold resistance, good resistance and wide adaptability.

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Breeding and Application of Two-line Hybrid Rice Y Liangyou 886 2017, 23(2): 93-94.  DOI: 10.3969/j.issn.1006-8082.2017.02.026 Abstract ( )   PDF (277KB) ( )   Y Liangyou 886, a new two-line hybrid rice, derived from the cross of Y88 S and Yihui 66, was approved by the Crop Variety Appraisal Committee of Henan Province in 2016. It has the characteristics of strong disease resistance, stable yield and good grain quality.

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Breeding and Application of a New Rice Variety Chugeng 31 with Stable Yield and Tolerance to Late Transplanting 2017, 23(2): 95-96.  DOI: 10.3969/j.issn.1006-8082.2017.02.027 Abstract ( )   PDF (259KB) ( )   Chugeng 31 is a new conventional japonica rice variety, bred by Agricultural Science Research Institute of Yunnan Province Chuxiong Prefecture. Its has the characteristics of high yield, stable yield, flexible seedling age, tolerance to late transplanting, suitable for machine transplanting and harvesting. The breeding procedure, characteristics, main cultivation techniques of Chugeng 31 were summarized in this paper.

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Breeding and Cultivation Techniques of Aromatic Rice Variety Songgeng 22 with Good Quality 2017, 23(2): 97-98.  DOI: 10.3969/j.issn.1006-8082.2017.02.028 Abstract ( )   PDF (298KB) ( )   Songgeng 22 is a aromatic rice variety with good quality, bred by Wuchang Rice Research Institute, Heilongjiang Academy of Agricultural Sciences with artificial hybridization pedigree method. Its whole growth period is 144 d and effective accumulated temperature 2 700℃. Songgeng 22 has the characteristics of good quality, high yield, stress resistance and mature stalk. It is suitable for planting in the upper temperature area of the first accumulated temperature zone of Heilongjiang Province. The breeding process, characteristics and cultivation techniques were introduced in this paper.

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Study on the Reasons of Prevalence of Rice Blast in Ningbo City 2017, 23(2): 99-102.  DOI: 10.3969/j.issn.1006-8082.2017.02.029 Abstract ( )   PDF (517KB) ( )   Rice blast is a major disease for late rice in plains of Ningbo City. Based on the survey of rice blast occurrence in 2014 and 2015, the article discussed the resistance of main cultivated varieties, meteorological factors and control measures related to the possible causes of prevalence. In addition, the study was conducive to improving early warning ability and integrated management of rice blast in Ningbo City.

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Effects and Consideration about Unified Prevention and Treatment of Rice Diseases and Insect Pests——From the Practice of Pan’an County in Zhejiang Province  2017, 23(2): 103-105.  DOI: 10.3969/j.issn.1006-8082.2017.02.030 Abstract ( )   PDF (434KB) ( )   Unified prevention and treatment of rice diseases and insect pests have been achieved remarkable achievements in promoting farmers ' income and ensuring national food security. Pan’an County is located in the central mountain area of Zhejiang Province, the ecological environment is complicated. Due to the complexity of the species populaiton and occurrence regularity of diseases and insect pests, there are great pressure on prevention and control. In this paper, the effects and existing problems were analyzed by summarizing the practices of unified prevention and control in Pan’an County from 2008 to 2016, and the countermeasures were proposed.

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The Current Situation and Development Countermeasures of Grain's Large-scale Production in Wuxi City 2017, 23(2): 106-108.  DOI: 10.3969/j.issn.1006-8082.2017.02.031 Abstract ( )   PDF (453KB) ( )   The current situation，advantages and existing problems of grain's large-scale production and management in Wuxi City were analyzed in this paper based on the investigating data, and put forward the development countermeasures.