50%二氯喹啉酸WP防除玉米田稗草效果评价

Efficiency Evaluation of 50% Quinclorac WP on Controlling Barnyardgrass in Corn Fields

在小区试验条件下 ,对 5 0 %二氯喹啉酸可湿性粉剂施用于玉米田防除稗草进行了初步探索。结果表明 ,5 0 %二氯喹啉酸可湿性粉剂在玉米 4～ 5叶期施用剂量为 90 0～ 12 0 0ga.i./hm2时 ,对稗草的防效明显 。

Initial experiment on 50% quinclorac WP controlling barnyardgrass in corn fields was conducted. The results showed that , control effects against barnyardgrass were satisfactory and no phytotoxicity was observed to corn after using 50% quinclorac WP with dose of 900～1200g a.i./ha at 4～5 leafage of corn.