50%吡嘧·二氯喹啉酸WP是目前防除移栽水稻田中一年生杂草十分优秀的茎叶除草剂,制剂用600 g/hm2,施药后15 d它对一年生杂草的株防效可达92.26%,施药后30 d它对一年生杂草的株防效可达92.03%,施药后45 d它对一年生杂草的株防效可达91.85%,鲜重防效可达93.28%,比同期用10%吡嘧磺隆WP 300 g/hm2的株防效分别高12.20%、13.00%、12.80%,鲜重防效高12.75%;比同期用50%二氯喹啉酸WP 600 g/hm2的株防效分别高59.89%、60.68%、61.83%,鲜重防效高57.47%。 50% pyrogram quinclorac WP is a very good stem and leaf herbicide for control of annual weeds in transplanted paddy fields. When used at 600 g / hm2, WP can control perennial weeds 15 days after application Up to 92.26%. The control effect of annual weeds was 92.03% at 30 days after application. The control effect of annual weeds was 91.85% at 45 days after application, and the control effect of fresh weight was 93.28% , Which was 12.20%, 13.00% and 12.80% higher than that of the control with 10% pyrazosulfuron-methyl WP 300 g / hm2 over the same period respectively. Compared with the same period, the control efficacy of 50% quinclorac WP 600 g / hm2 was 59.89%, 60.68%, 61.83%, respectively, and the control effect of fresh weight was 57.47%.