Effects of Nitrogen‑Silicon Combined Application on Rice Planthopper Occurrence and Rice Yield in Double‑Cropping Rice Field

doi:10.15933/j.cnki.1004-3268.2025.08.009

Abstract

Abstract: To provide scientific basis and technical support for green prevention and control of rice planthopper occurrence and sustainable production of double‑cropping rice in paddy fields，field experiments on early and late rice were carried out at Funong Cooperative in Meihua Village，Xidu Town，Hengyang County，Hunan Province. With Xiangzaoxian 45（early rice）and Taiyou 553（late rice）as materials，four nitrogen application levels［early rice N0（0 kg/ha），N1（120 kg/ha），N2（150 kg/ha）N3（180 kg/ha）and late rice N0（0 kg/ha），N1（150 kg/ha），N2（180 kg/ha）and N3（210 kg/ha）］and two silicon levels［S0（0 kg/ha），S1（150 kg/ha）］ were designed for the early and late rice.Under machine‑transplanted conditions，field experiments were conducted to explore the effects of combined application of silicon fertilizer under different nitrogen application rates on the occurrence of rice planthoppers and rice yield in double‑cropping paddy fields in southern Hunan（Hengyang）.The results showed that nitrogen application rate had a significant effect on the occurrence of field rice planthoppers，rice yield and its components. With the increase of nitrogen application rate，the number of field rice planthoppers increased significantly，and the effective panicle number，grains per panicle，1 000‑grain weight and yield of rice were significantly improved. Silicon application had a significant effect on the occurrence of field rice planthoppers，significantly reducing the number of field rice planthoppers.The highest insect population reduction rate of early rice could reach 56.81%，and that of late rice could reach 71.59%.The effective panicle number，grains per panicle，1 000‑grain weight and yield of silicon‑applied rice were all improved，but the difference was not significant.The yield increase range of early rice was 2.32%—11.57%，and that of late rice was 2.83%—9.83%.The interaction effect of nitrogen application rate and silicon application had a significant effect on the occurrence of field rice planthoppers and rice yield.The yields of N3S1，N3S0 and N2S1 were higher in both early and late rice，and there was no significant difference among them，but the number of rice planthoppers in N2S1 treatment was significantly lower than that in N3S1 and N3S0 treatments.Considering the rice yield and the control effect of rice planthoppers，it is appropriate to apply 150 kg/ha nitrogen combined with 150 kg/ha silicon fertilizer for early rice，and 180 kg/ha nitrogen combined with 150 kg/ha silicon fertilizer for late rice in Hengyang area.

Key words: Double?cropping rice, Nitrogen application rate, Silicon fertilizer, Rice planthopper, Yield

摘要： 为绿色防控稻田稻飞虱发生，保障双季稻可持续生产，在湖南省衡阳县西渡镇梅花村富农合作社开展早、晚稻大田试验，以湘早籼45号（早稻）和泰优553（晚稻）为材料，早晚稻分别设计4个施氮水平［早稻N0（0 kg/hm²）、N1（120 kg/hm²）、N2（150 kg/hm²）、N3（180 kg/hm²）；晚稻N0（0 kg/hm²）、N1（150 kg/hm²）、N2（180 kg/hm²）、N3（210 kg/hm²）］和2个施硅水平［S0（0 kg/hm²）、S1（150 kg/hm²）］，在机插条件下探究不同施氮量下配施硅肥对双季稻田稻飞虱发生情况与水稻产量的影响。结果表明，施氮量对田间稻飞虱发生和水稻产量及其构成因素影响显著，随着施氮量的增加，田间稻飞虱数量显著增加，水稻的有效穗数、穗粒数、千粒质量和产量均得到显著提升；施硅对田间稻飞虱发生影响显著，使田间稻飞虱数量显著降低，早稻虫口减退率最高可达56.81%，晚稻虫口减退率最高可达71.59%，施硅水稻有效穗数、穗粒数、千粒质量和产量均有所提升，但差异不显著，早稻增产幅度为2.32%~11.57%，晚稻增产幅度为2.83%~9.83%；施氮量与施硅的互作效应对田间稻飞虱发生情况和水稻产量影响显著，早、晚稻均以N3S1、N3S0和N2S1产量较高，且三者间无显著差异，但N2S1处理稻飞虱发生数量显著低于N3S1和N3S0处理。综合考虑水稻产量与稻飞虱防控效果，衡阳县早稻以施氮150 kg/hm²配施硅肥150 kg/hm²为宜，晚稻以施氮180 kg/hm²配施硅肥150 kg/hm²为宜。

关键词: 双季稻, 施氮量, 硅肥, 稻飞虱, 产量

CLC Number:

CHENG Zhouqi, LIU Yuwu, ZHUO Le, QIU Lin, YI Zhenxie. Effects of Nitrogen‑Silicon Combined Application on Rice Planthopper Occurrence and Rice Yield in Double‑Cropping Rice Field[J]. Journal of Henan Agricultural Sciences, 2025, 54(8): 92-101.

程周琦, 刘玉午, 卓乐, 邱林, 易镇邪. 氮硅配施对双季稻田间稻飞虱发生与水稻产量的影响[J]. 河南农业科学, 2025, 54(8): 92-101.

Figures/Tables 9

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