土壤封闭处理对大豆、玉米复合种植田阔叶杂草的防效研究

Effect of Soil Sealing Treatment on Control of Broadleaf Weeds in Soybean Corn Compound Planting Field

为探讨大豆玉米带状复合种植杂草防除技术,本研究采用播后至苗前的土壤封闭方法,对6种除草剂进行了田间药效试验.结果表明,40%扑·乙可湿性粉剂、20%氟草·草铵膦可分散油悬浮剂土壤封闭处理对阔叶杂草防效较好,药后30 d对阔叶类杂草株防效分别为99.31%,96.76%,鲜质量防效分别为99.97%,99.42%;对水苋菜株防效分别为99.31%,96.99%,鲜质量防效依次为99.97%,99.30%.药剂处理均对大豆和玉米安全,未发现药害.

In order to seek weed control technology in soybean corn compound planting field,6 kinds of herbicides were applied in soil sealing test at seedling stage after sowing.The results showed that 40%promethazine·acetonide wettable powder and 20%Flufop·Glyphosate dispersible oil suspension agent had a good control effect on broadleaf weeds.On the 30 th day after application,the control effects on broadleaf weeds were 99.31%and 96.76%,and the control effect ofthe fresh mass were 99.97%and 99.42%,respectively.Besides,the plant control effects on Ammannia baccifera.were 99.31%and 96.99%,control effect of the fresh mass were 99.97%and 99.30%,respectively.Each agent used in the treatment was safe for soybean and corn.