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50%氯虫苯甲酰胺悬浮剂拌种对二化螟和 稻纵卷叶螟的防治效果
Control of the rice stem borer and rice leaf folder using the seed dressing agent chlorantraniliprole
韩永强;李丹丹;邓权权;王龙江;侯茂林
点击:428次 下载:34次
DOI:10.7679/j.issn.2095-1353.2022.119
作者单位:宜春学院生命科学与资源环境学院,江西省作物生长发育调控重点实验室,宜春 336000; 中国农业科学院植物保护研究所,植物病虫害生物学国家重点实验室,北京 100193
中文关键词:氯虫苯甲酰胺;二化螟;稻纵卷叶螟;种子处理;防治效果
英文关键词:chlorantraniliprole; Chilo suppressalis; Cnaphalocrocis medinalis; seed treatment; control efficiency
中文摘要:
【目的】 为实现二化螟Chilo suppressalis和稻纵卷叶螟Cnaphalocrocis medinalis的轻简化防控,减少田间化学防治次数及用药量。【方法】 采用50%氯虫苯甲酰胺种子处理悬浮剂对水稻种子进行拌种处理,以5%氯虫苯甲酰胺悬浮剂和3%阿维菌素水乳剂大田喷雾作为对照,以不施药为空白对照,室内测定拌种处理对种子发芽和稻苗的安全性,田间测定直播和移栽模式下拌种处理对二化螟和稻纵卷叶螟的防治效果及水稻产量的影响。【结果】 50%氯虫苯甲酰胺悬浮剂拌种处理(150 mL/hm2和120 mL/hm2)对种子发芽及出苗均无影响。直播田播种后62 d内,移栽田移栽后56 d内,150 mL/hm2拌种处理的螟害株率(F ≥ 20.886, df = 4, 14, P < 0.001)和卷叶株率(F ≥ 7.836, df = 4, 14, P ≤ 0.004)均显著低于喷雾对照,150 mL/hm2拌种处理对二化螟的防效在93.33%以上,对稻纵卷叶螟的防效在70.31%以上。直播和移栽模式下,150 mL/hm2拌种处理的有效穗数、穗长、结实率、千粒重和产量均显著高于喷雾对照。【结论】 50%氯虫苯甲酰胺悬浮剂拌种对水稻种子发芽安全,对二化螟和稻纵卷叶螟具有很好的防治效果和持效性,对水稻具有增产作用,可作为水稻鳞翅目害虫轻简化防控的主要措施之一。
英文摘要:
[Objectives]  To introduce a simple and labor-saving method of controlling the rice stem borer (RSB) and rice leaf folder (RLF) and thereby reduce the frequency of pesticide application and the amount of pesticide applied. [Methods]  Rice seeds were treated with different concentrations of 50% chlorantraniliprole FS. The spray control was 5% chlorantraniliprole SC, or 3% abamectin EW in the field, and the control was no pesticide spray. Germination and emergence were determined in a laboratory. Control of the RSB and RLF, and rice yields achieved under the different seed treatments, were evaluated in both directly seeded, and transplanted, field plots. [Results]  Germination and emergence were not affected by treatment with chlorantraniliprole concentrations of 150 mL/hm2 or 120 mL/hm2. Treatment of seeds with 150 mL/hm2 of chlorantraniliprole resulted in less RSB and RLF damage to rice plants compared to the spray control in directly seeded plots 62 days after sowing, and in transplanted plots 56 days after transplanting. The 150 mL/hm2 chlorantraniliprole treatment achieved > 93.33% control of the RSB and > 70.31% control of the RLF. Effective panicle number, panicle length, grain-filling percentage, 1000-grain weight and yield, were all higher in the 150 mL/hm2 chlorantraniliprole treatment than in the spray control in both cultivation modes. [Conclusion]  The results indicate that dressing rice seeds with chlorantraniliprole does not affect germination and is an effective method of controlling both the RSB and RLF, thereby increasing rice yield. This method has great potential as a simple and labor-saving method of controlling lepidopteran pests of rice.
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