水稻移栽田杂草防治试验  

Experiment on Control of Weeds in Rice Transplanting Field

作　　者：王争取 WANG Zhengqu(Anhui Share World Biotechnology Co.,Ltd.,Hefei Anhui 230031)

机构地区：[1]安徽尚禾沃达生物科技有限公司,安徽合肥230031

出　　处：《现代农业科技》2021年第6期114-115,121,共3页Modern Agricultural Science and Technology

摘　　要：采用田间试验方法,研究66%吡嘧磺隆·丁草胺·西草净油分散制剂对水稻移栽田一年生杂草的防除效果、合理使用剂量及其对水稻的安全性。结果表明:66%吡嘧磺隆·丁草胺·西草净油分散制剂对水稻移栽田稗草、千金子、异型莎草、水苋菜防除效果较好,且对水稻安全;药后45 d,600、900、1200 mL/hm2用药处理对杂草综合株防效分别为91.47%、95.01%和97.04%,对杂草综合鲜重防效分别为95.96%、97.71%和98.47%;66%吡嘧磺隆·丁草胺·西草净油分散制剂中剂量处理的株防效及鲜重防效显著高于对照药剂50%丁草胺乳油3000 mL/hm2。建议在水稻移栽前5~7 d施药,适宜用量为900~1200 mL/hm2。The field test method was used to study the control effect and the reasonable dosage of 66%pyrazosulfuron·butachlor·simetryn oil dispersant on annual weeds in rice transplanting fields and its safety to rice.The results showed that 66%pyrazosulfuron·butachlor·simetryn oil dispersant had good control effect on Echinochloa crusgalli(L.)Beauv.,Leptochloa chine-nsis(L.)Nees,Cyperus difformis L.and Ammannia baccifera L.in rice transplanting field,and was safe for rice;45 days after the treatment,the comprehensive weed plant control effect of 600,900,1200 mL/hm2 treatment was 91.47%,95.01%and 97.04%,respectively,and the comprehensive weed fresh weight control effect of that was 95.96%,97.71%and 98.47%,respectively.The plant control effect and fresh weight control effect of 66%pyrazosulfuron·butachlor·simetryn oil dispersant medium dose treatment was significantly higher than that of 50%butachlor emulsifiable concentrate 3000 mL/hm2.It is recommended to apply the pesticide 5-7 d before rice transplanting,and the appropriate dosage is 900-1200 mL/hm2.

关 键 词：66%吡嘧磺隆·丁草胺·西草净油分散制剂 水稻移栽田 杂草 防效 

分 类 号：S451.2[农业科学—植物保护]