Effects of Water Management Method on Yield and Rice Planthopper Occurrence of Double‑Cropping Rice

doi:10.15933/j.cnki.1004-3268.2025.07.010

Abstract

Abstract: Hengyang local main varieties（early rice：Xiangzaoxian 45；late rice：Taiyou 553）were used as materials to carry out field experiments，and the effects of different water management methods（W1：flooding irrigation；W2：intermittent irrigation；W3：wet irrigation ）on the yield and rice planthopper occurrence of double‑cropping rice were studied，so as to clarify the water management method that is conducive to the stable yield of rice in central and southern Hunan and can effectively prevent and control the occurrence of rice planthopper，and lay a foundation for the construction of sustainable prevention and control technology system of rice planthopper.The results showed that in 2022，the yield of early rice of W2 treatment was significantly higher than those of W3 and W1 treatments，and the yields of late rice of W2 and W3 treatments were significantly higher than that of W1 treatment. The difference between W2 and W3 treatments was not significant，and the main reason for the difference in yield was the number of effective panicles.In 2023，the yields of early and late rice of W3 treatment were higher than those of W1 and W2 treatments，and the main reason for the difference in yield was seed setting rate.Water management method had a significant effect on the rice planthopper occurrence of early and late rice，especially in the peak period.In general，the order of rice planthopper number was W1>W2>W3，and W3 treatment was significantly lower than W1 and W2 treatments.In 2022，the rice planthopper number of late rice of W3 treatment decreased by 15.4% and 28.6% compared with W2 and W1 treatments，and decreased by 35.2% and 40.6% in whole 2023.The results of correlation analysis showed that rice planthopper number at most growth stages was significantly or extremely significantly positively correlated with the relative humidity at the base，the water content of the leaf sheath，and the peroxidase（POD）activity of the leaf sheath.In summary，wet irrigation can reduce the occurrence of rice planthoppers by reducing the relative humidity at the base of rice population and the water content of leaf sheath，and ensure higher yield of rice，which is an ideal water management method.

Key words: Double?cropping rice, Water management method, Yield, Rice planthopper, Field microclimate

摘要： 以衡阳当地主栽品种（早稻：湘早籼45号；晚稻：泰优553）为材料开展大田试验，研究不同水分管理方式（W1：淹水灌溉；W2：间歇灌溉；W3：湿润灌溉）对双季稻产量和稻飞虱发生的影响，以明确有利于湘中南地区水稻稳产并可有效防控稻飞虱发生的水分管理方式，为构建稻飞虱可持续防控技术体系奠定基础。结果表明，2022年早稻产量表现为W2处理显著高于W3和W1处理，晚稻产量表现为W2和W3处理显著高于W1处理，W2和W3处理差异不显著，产量差异的主要原因是有效穗数；2023年早、晚稻产量均表现为W3处理高于W1和W2处理，产量差异的主要原因是结实率。水分管理方式对早、晚稻稻飞虱发生均有显著影响，尤其是发生高峰期，总体上稻飞虱百丛头数均表现为W1>W2>W3，W3处理显著低于W1和W2处理，2022年晚稻W3处理分别较W2和W1处理减少15.4%和28.6%，2023年全年分别减少35.2%和40.6%。相关性分析结果表明，大部分时期稻飞虱百丛头数与基部相对湿度、叶鞘含水量、叶鞘过氧化物酶（POD）活性均呈显著或极显著正相关。综上，湿润灌溉可通过降低水稻群体基部相对湿度和叶鞘含水量来减轻稻飞虱发生，且可保证水稻较高产量，是理想的水分管理方式。

关键词: 双季稻, 水分管理方式, 产量, 稻飞虱, 田间小气候

CLC Number:

S511

LIU Yuwu, ZHUO Le, CHENG Zhouqi, QIU Lin, LI Youzhi, TU Naimei, YI Zhenxie. Effects of Water Management Method on Yield and Rice Planthopper Occurrence of Double‑Cropping Rice[J]. Journal of Henan Agricultural Sciences, 2025, 54(7): 98-106.

刘玉午, 卓乐, 程周琦, 邱林, 李有志, 屠乃美, 易镇邪. 水分管理方式对双季稻产量和稻飞虱发生的影响[J]. 河南农业科学, 2025, 54(7): 98-106.

Figures/Tables 8

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