摘要
In order to explore the control effects of 10% metamifop EC and 20%cyhalofop-butyl OD on barnyard grass(Echinochloa crusgalli(L.) Beauv.) as well as their safety to rice in rice direct-seeding paddy field, field efficacy experiments were carried out in Taoyuan County and Hanshou County of Hunan Province. The results showed that the control effect of different pesticide treatments on barnyard grass was good, and the control effect reached more than 93%. Of which, 10% metamifop EC 2 250 mL/hm^(2)+20% cyhalofop-butyl OD 1 500 mL/hm^(2)had the best control effect,exceeding 99% and each treatment had no significantly ponisonous to rice. However,considering cost-saving and effect-increasing, it was recommended to use 10%metamifop EC 1 050 mL/hm^(2)mixed with 20% cyhalofop-butyl OD 1 050 mL/hm^(2)for the control of barnyard grass, which not only had the effect of controlling barnyard grass, but also was safety to rice.
为探明10%噁唑酰草胺EC与20%氰氟草酯OD混配对水稻直播田稗草的防治效果及对水稻的安全性,在湖南省桃源县和汉寿县两个地区进行田间药效试验。结果表明:不同处理对稗草的防效良好,防效均达到了93%以上;10%噁唑酰草胺2 250 mL/hm^(2)与20%氰氟草酯1 500 mL/hm^(2)混配施用稗草防效最好,超过了99%;各处理对水稻均无明显药害。但考虑到节本、增效,在早稻分蘖期以后推荐使用10%噁唑酰草胺EC1 050 mL/hm^(2)与20%氰氟草酯OD 1 050 mL/hm^(2)混合药剂,防效较好且对水稻安全。
基金
Supported by Science and Technology Project of Hunan Province (2019NK4170)
Project of Hunan Provincial Education Department (19K049, 20C1031)
Youth Fund Project of Hunan University of Humanities,Science and Technology (2020QN02)。
