34.5%吡嘧磺隆·二氯喹啉酸WP防除移栽稻田杂草效果

Effects of 34.5% Wettable Powder Mixed with Pyrazosulfuron and Quinclorac for Control of Weeds in Transplanted Rice Fields

研究34.5%吡嘧磺隆.二氯喹啉酸(以下简称吡嘧.二氯)WP对移栽稻田主要杂草的控制效果、对水稻产量的影响以及杂草氮、磷、钾和水分含量的变化规律。结果表明,34.5%吡嘧.二氯WP对移栽稻田的主要杂草具有良好的防治效果,有效成分用量为145～445 g/hm2的34.5%吡嘧.二氯WP综合密度防效和综合鲜重防效分别为90.33%～100.00%、91.72%～100.00%,显著优于对照单剂10%吡嘧磺隆WP和50%二氯喹啉酸WP。施用34.5%吡嘧.二氯WP后,水稻产量显著高于对照药剂处理区的产量。

The weed of 34.5% pyrazosulfuron ＋ quinclorac WP and effects on weed control,crop yield,as well as the variety discipline of the absorption of nitrogen,phosphorus,kalium and moisture in transplanted rice fields were studied.The results showed that 34.5% pyrazosulfuron ＋ quinclorac WP had good control effect against the main weeds in broadcasted rice fields.The overall density control effects and fresh control effects were 90.33%～100.00%,91.72%～100%,significantly higher than that of 10% WP,10% pyrazosulfuron WP and 50% quinclorac WP.The application of 34.5% pyrazosulfuron ＋ quinclorac WP significantly increased the yield of rice,which was higher than that of the control herbicides.