不同除草剂对玉米田杂草防效研究

玉米播后苗前用五种除草剂对苗期杂草进行防除.结果表明:90%禾耐斯+48%百草敌(水剂)和50%的都阿悬乳剂对玉米田一年生杂草防效均较好,其株防效及鲜重防效分别达92.4%、87.6%、97.3%、95.0%;而480克/升拉索乳油,50%乐丰宝对禾本科杂草的防效较好,其株防效及鲜重防效分别为87.9%、93.1%、87.7%、95.5%.

Study on the Effectiveness of 5 Herbicide on Controling Maize Fieed Weeds

The experiment was conducted to study on the effctiveness of Sdifferent herbicides on controling weeds of maize seedling. The results were as follows:acetoculor90% + dicamba48% and atrazine 50% , got the better result on controling annual weeds. Their effectiveness of per plant we 92. 4% and 97. 3 % respectively and the effectiveness of fresh weight were 87.6and 95% .As to weeds of the grass family, the results of alachlor 480g/l and lefenbao 50 % were better, Their per plant effectiveness were 87. 9 % and 87.7 % , and fresh weight effectiveness were 93.1 % and 95. 5 % respectively.