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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。
Study on the control effect of pyrazosulfuron ethyl with 34.5% quinclorac and quinclorac on the main weeds in transplanted paddy field, the effects on rice yield and the contents of nitrogen, phosphorus, potassium and water in weeds The law of change. The results showed that 34.5% pyrazole and dichloro-WP had good control effect on the main weeds in the transplanted paddy fields, and the effective components were 34.5% pyrimethasone with 145 ~ 445 g / hm2. The fresh weight control effect was 90.33% -100.00% and 91.72% -100.00%, respectively, which was significantly better than that of control single-dose 10% pyrazosulfuron-methyl WP and 50% quinclorac WP. After applying 34.5% pyrimethamine and dichloro-WP, the yield of rice was significantly higher than that of the control chemical treatment area.