齐穗期施肥对水稻镉积累的影响

doi:10.3969/j.issn.1006-8082.2019.03.010

摘要/Abstract

摘要：

为探究在齐穗期施肥对水稻Cd积累的影响，完善对镉的防控技术，采用田间小区试验，在齐穗前施肥量（基肥、分蘖肥和穗肥）一致条件下，设4个粒肥水平（T1，齐穗期施用尿素77.59 kg/hm2；T2，齐穗期施用尿素116.39 kg/hm2；T3，齐穗期施用尿素155.18 kg/hm2； T4，齐穗期施用尿素193.75 kg/hm2），在水稻成熟后采集植株样品进行相关指标测定。结果表明，施用粒肥均可提高水稻产量，增加水稻地上部干物质积累；玉针香和湘晚籼12号均在T4处理下增产效果最佳，较CK（全生育期不施氮肥）分别增产18.66%、34.59%。不同处理对水稻Cd积累存在显著差异，2个品种的根系和茎秆Cd含量在 T1处理下最低，且与T4处理和CK差异显著，T4处理下最高；2个品种的糙米Cd含量均以T1处理最低，但玉针香以T4处理最高，而湘晚籼12号以T3处理最高，湘晚籼12号糙米Cd含量T1处理显著低于CK。从提高水稻产量和品质安全综合来看，建议大田生产中，粒肥施用量以77.59 kg/hm2较适宜。

关键词: 粒肥, 水稻, 镉, 齐穗期

Abstract:

The objective of the study was to explore the effects of fertilization on Cd accumulation in rice at full heading stage and to improve rice cadmium control technology. A field plot experiment was carried out, under the condition that the amount of fertilizer applied before heading （basal fertilizer, tillering fertilizer and panicle fertilizer） was consistent, four grain fertilizer levels （T1, 77.59 kg/hm2 urea was applied at the heading stage; T2, 116.39 kg/hm2 urea was applied at the heading stage; T3, 155.18 kg/hm2 urea was applied at the heading stage ; T4, 193.75 kg/hm2 urea was applied at the heading stage ）were designed, and plant samples were collected after ripening to determine relevant indexes. The results showed that applying grain fertilizer could increase the yield of rice and the accumulation of aboveground parts of rice. The two varieties reached the highest yield under T4 treatment. Compared with CK （no nitrogen fertilizer applied during the whole growth stage）, the yield of Yuzhenxiang and Xiangwanxian 12 were increased by 18.66% and 34.59% respectively. There were significant differences in Cd accumulation among different treatments. The Cd content in roots and stems of the two varieties was the lowest under T1 treatment and was the highest under T4 treatment, and T1 treatment is significantly different with T4 treatment and CK. The Cd content in brown rice of Yuzhenxiang and Xiangwanxian 12 was the lowest under T1 treatment, and the Cd content in brown rice of Yuzhenxiang was the highest under T4 treatment and Xiangwanxian 12 was the highest under T3 treatment. The Cd content in brown rice of Xiangwanxian 12 under T1 treatment was significantly lower than CK. It is suggested that applying 77.59 kg/hm2 urea fertilizer at full heading stage is suitable for improving grain yield and quality safety.

Key words: grain fertilizer ;rice, cadmium, full heading stage

中图分类号:

S511.062

张玉盛,肖欢, 敖和军*. 齐穗期施肥对水稻镉积累的影响[J]. 中国稻米, DOI: 10.3969/j.issn.1006-8082.2019.03.010 .

参考文献

[1] 环境保护部，国土资源部. 全国土壤污染状况调查公报[J]. 环境教育，2014（6）：8-10. [2] MUHAMMAD A K, SARDAR K, ANWARZEB K,et,al. Soil contamination with cadmium, consequences and remediation using organic amendments[J]. Sci Total Environ, 2017, 601-602: 1 591-1 605. [3] HE B,YUN Z J, SHI J B,et al. Research progress of heavy metal pollution in China: Sources, analytical methods, status, and toxicity[J]. Chin Sci Bull, 2013, 58（2）: 134-140. [4] 叶长城，陈喆，彭鸥，等. 不同生育期Cd胁迫对水稻生长及镉累积的影响[J]. 环境科学学报，2017，37（8）：3 201-3 206. [5] 王倩倩，贾润语，李虹呈，等. Cd胁迫水培试验下水稻糙米Cd累积的关键生育时期[J]. 中国农业科学，2018，51（23）：4 424- 4 433. [6] 张振兴，纪雄辉，谢运河，等. 水稻不同生育期施用生石灰对稻米镉含量的影响[J]. 农业环境科学学报，2016，35（10）：1 867-1 872. [7] 彭华，田发祥，魏维，等. 不同生育期施用硅肥对水稻吸收积累镉硅的影响[J]. 农业环境科学学报，2017，36（6）：1 027-1 033. [8] 彭鸥. 不同生育期低浓度Cd胁迫对水稻Cd积累影响[A]//中国环境科学学会. 2016中国环境科学学会学术年会论文集 [C]. 北京：中国环境科学学会，2016：7. [9] 唐皓，李廷轩，张锡洲，等. 水稻镉高积累材料不同生育期镉积累变化特征研究[J]. 农业环境科学学报，2015，34（3）：471-477. [10] 王凯荣，龚惠群. 不同生育期镉胁迫对两种水稻的生长、镉吸收及糙米镉含量的影响[J]. 生态环境，2006（6）：1 197-1 203. [11] 冯雪敏. 水稻富集镉砷的关键部位、生育时期及相关元素的研究[D]. 北京：中国农业科学院，2017. [12] 张利强. 水稻重金属镉的吸收、转运和积累特性研究[D]. 北京：中国农业科学院，2012. [13] MATTHEW S, RODDA G L, ROBERT R J, et al. The timing of grain Cd accumulation in rice plants: the relative importance of remobilisation within the plant and root Cd uptake post-flowering[J]. Plant Soil, 2011, 347: 105-114. [14] 李志刚，叶正钱，杨肖娥，等. 不同养分管理对杂交稻生育后期功能叶生理活性和籽粒灌浆的影响[J]. 浙江大学学报（农业与生命科学版），2003，29（3）：31-36. [15] 成臣，曾勇军，王祺，等. 氮肥运筹对南方双季晚粳稻产量及品质的影响[J]. 植物营养与肥料学报，2018，24（5）：1 386-1 395. [16] FUJIMAKI S, SUZUI N, ISHIOKA N S, et al. Tracing cadmium from culture tospikelet: noninvasive imaging and quantitative characterization of absorption, transport, and accumulation of cadmium in an intact rice plant [J]. Plant Physiol, 2010, 152（4）: 1 796-1 806. [17] KASHIWAGI T, SHINDOH K, HIROTSU N, et al. Evidence for separate translocation pathways in determining cadmium accumulation in grain and aerial plant in rice[J]. BMC Plant Biol, 2009, doi: 10.1186/1471-2229-9-8. [18] 喻华，上官宇先，涂仕华，等. 水稻籽粒中镉的来源[J]. 中国农业科学，2018，51（10）：1 940-1 947. [19] 杨永杰. 氮肥形态与用量对水稻镉积累和毒害的影响及调控机制研究[D]. 北京：中国农业科学院，2016. [20] 徐国伟，陆大克，王贺正，等. 施氮和干湿灌溉对水稻抽穗期根系分泌有机酸的影响[J]. 中国生态农业学报，2018，26（4）：516-525. [21] 沈美红，龚玉莲，陈彩锋，等. 根系分泌物对土壤重金属吸附解吸影响的研究进展[J]. 绿色科技，2019（6）: 81-83. [22] 张敬锁，李花粉，衣纯真. 有机酸对水稻镉吸收的影响[J].农业环境保护，1999（6）：278-280.