Effects of Different Irrigation Water Rate on Rice Yield and Water Use Efficiency

doi:10.3969/j.issn.1006-8082.2024.05.015

China Rice ›› 2024, Vol. 30 ›› Issue (5): 103-106.DOI: 10.3969/j.issn.1006-8082.2024.05.015

• Special Thesis & Basic Research • Previous Articles Next Articles

Effects of Different Irrigation Water Rate on Rice Yield and Water Use Efficiency

CAI Haoyang¹^,²^,^#, HAN Menghong³^,^#, CHEN Junlin², LU Chusheng¹^,², WANG Junjiang¹^,², LIAO Jiahui¹^,², LU Zhanhua², LIANG Kaiming², YIN Yuanhong², YE Qunhuan², FU Youqiang²^,^*(), CHENG Xiong¹^,^*()

¹South China Agricultural University, Guangzhou 510642, China
²Rice Research Institute, Guangdong Academy of Agricultural Sciences/Guangdong Key Laboratory of New Technology in Rice Breeding/ Key Laboratory of Genetics and Breeding of High Quality Rice in South China (Co-construction by Ministry and Province), Ministry of Agriculture and Rural Affairs/Guangdong Rice Engineering Laboratory, Guangzhou 510640, China
³Guangzhou Academy of Agriculture and Rural Sciences, Guangzhou 510470, China

Received:2024-07-24 Online:2024-09-20 Published:2024-09-12
Contact: ^*fyq040430@163.com; chengx@scau.edu.cn
About author:First author contact:^# Co-first author

不同灌溉用水量对水稻产量和水分利用效率的影响

蔡昊炀¹^,²^,^#, 韩孟红³^,^#, 陈俊霖², 陆楚盛¹^,², 王俊江¹^,², 廖嘉晖¹^,², 陆展华², 梁开明², 尹媛红², 叶群欢², 傅友强²^,^*(), 程雄¹^,^*()

¹华南农业大学,广州 510642
²广东省农业科学院水稻研究所/广东省水稻育种新技术重点实验室/农业农村部华南优质稻遗传育种重点实验室(部省共建)/广东省水稻工程实验室,广州 510640
³广州市农业农村科学院,广州 510470

通讯作者: ^*fyq040430@163.com; chengx@scau.edu.cn
作者简介:第一联系人：^# 共同第一作者
基金资助:
广州市重点研发计划项目(202206010069);广东省农业科学院协同创新中心项目“智慧(数字)农业研究中心建设运行经费项目”(XTXM202201);广东省自然科学基金面上项目(2023A1515011533);广东省水稻育种新技术重点实验室项目(2023B1212060042)

Abstract

Abstract:

Water-saving irrigation is an important measure to improve water use efficiency and efficient rice production. The effects of four different irrigation water amounts on the yield, biomass, and water grain production efficiency of the widely planted rice variety Yuehesimiao were studied by pot experiment in Southern China. The results showed that with the decrease of irrigation water rate, the number of grains per panicle of rice decreased gradually, and the seed setting rate increased gradually, and the rice yield first increased and then decreased. Compared with CK (long-term flooding irrigation, 38.6 L/pot), T2 treatment (88.6% of long-term flooding irrigation water rate) increased rice yield by 14.55%, T4 treatment (36.8% of long-term flooding irrigation water rate) decreased rice yield by 45.28%, but there was no significant difference in T3 treatment (62.4% of long-term flooding irrigation water rate), indicating that reducing irrigation water consumption by 37.6% does not affect rice yield. Compared with CK, the biomass of T4 treatment significantly decreased by 50.84%, while was no significant difference in T2 and T3 treatments. Among the four treatments, the water grain production efficiency was the highest in T3 treatment, significantly increased by 62.38% compared to CK. In summary, under the conditions of this experiment, reducing irrigation water consumption by 37.6% does not result in a decrease in rice yield, and the water grain production efficiency is the highest.

Key words: rice, water-saving irrigation, yield, water grain use efficiency

摘要：

节水灌溉是提高水分利用效率和水稻高效生产的重要措施。以华南地区种植面积较广的水稻品种粤禾丝苗为材料,盆栽试验比较了4种不同灌溉用水量处理对水稻产量、生物量和水分籽粒生产效率的影响。结果表明,随着灌溉用水量的减少,水稻每穗粒数逐渐下降,结实率逐渐增加,而水稻产量先增加后减少。与CK(长期淹水灌溉,水量38.6L/盆)相比,T2处理(长期淹水灌溉用水量的88.6%)的水稻产量增加14.55%,T4处理(长期淹水灌溉用水量的36.8%)的水稻产量减少45.28%,但T3处理(长期淹水灌溉用水量的62.4%)无明显差异,表明减少37.6%的灌溉用水量不影响水稻产量。与CK相比,T4处理的生物量显著减少50.84%,T2和T3处理无显著差异。4个处理中T3处理的水分籽粒生产效率最高,比CK显著增加62.38%。综上所述,在本试验条件下,T3处理(减少37.6%的灌溉用水量)水稻不减产,水分籽粒生产效率最高。

关键词: 水稻, 节水灌溉, 产量, 水分籽粒生产效率

CLC Number:

S511.071

CAI Haoyang, HAN Menghong, CHEN Junlin, LU Chusheng, WANG Junjiang, LIAO Jiahui, LU Zhanhua, LIANG Kaiming, YIN Yuanhong, YE Qunhuan, FU Youqiang, CHENG Xiong. Effects of Different Irrigation Water Rate on Rice Yield and Water Use Efficiency[J]. China Rice, 2024, 30(5): 103-106.

蔡昊炀, 韩孟红, 陈俊霖, 陆楚盛, 王俊江, 廖嘉晖, 陆展华, 梁开明, 尹媛红, 叶群欢, 傅友强, 程雄. 不同灌溉用水量对水稻产量和水分利用效率的影响[J]. 中国稻米, 2024, 30(5): 103-106.

Figures/Tables 3

References 28

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Effects of Different Irrigation Water Rate on Rice Yield and Water Use Efficiency

不同灌溉用水量对水稻产量和水分利用效率的影响

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