【作者】 张建华； 朱文达； 王晶；

【Author】 Zhang Jianhua;Zhu Wenda;Wang Jing;Food Crops Research Institute,Hubei Academy of Agricultural Sciences;Institute of Plant Protection and Soil Science,Hubei Academy of Agricultural Sciences;

【机构】 湖北省农业科学院粮食作物研究所； 湖北省农业科学院植保土肥所；

【摘要】 采用田间小区试验方法,研究了43%丙草胺.苄嘧磺隆WP防除水稻抛秧田主要杂草药效试验,同时测定了对水稻产量以及杂草氮、磷、钾和水分含量的影响。试验结果表明,有效成分用量为161~452g/hm~2的43%丙草胺·苄嘧磺隆WP施药后55天,综合密度防效为98.94%~100.00%,综合鲜重防效为98.73%~100.00%;显著优于对照药剂30%丙草胺EC和10%苄嘧磺隆WP。施用43%丙草胺·苄嘧磺隆WP能降低杂草对田间养分和水分的吸收,从而提高产量。更多还原

【Abstract】 By field trials,control effect of 43%pretilachlor + bensulfuron-methyl WP against weeds in seedling-throwing transplanted rice field was studied.Besides,trials were conducted to evaluate the effects of crop yield and the absorption of nitrogen,phosphorus,kalium and moisture.The results showed that excellent weed control performance was achieved when 43%pretilachlor and bensulfuron-methyl WP was applied 55 days later.And with the dosage of 145 ~445kg/hm~2,the overall density control effect of is 98.94%~ 100.00%,and the overall fresh control effect is 98.73%~ 100.00%,which was better than 30%pretilachlor EC and 10%bensulfuron-methyl WP.The application of 43%pretilachlor + bensulfuron-methyl WP significantly reduced the weeds absorption of nurition and water,resulting in prominent yield enhancing.更多还原