3％呋喃丹颗粒剂深施防治棉蚜的效果显著,试验结果如下: 4月7日播种,施药区先开沟按每亩3斤用量施下,然后播种,再覆以细砂土。出苗后至现蕾前未施任何其它农药。 田间观察播种后一个月内,施药区基本无蚜害,植株正常生长,其后蚜量始上升。 3% carbofuran granules deep application of cotton aphid control effect is remarkable, the test results are as follows: April 7 sowing, pesticide application zone ditch 3 kg per acre amount of application, and then sown, and then covered with fine sand. No other pesticides were applied after emergence to budding. Within one month after sowing in the field observation, there was basically no aphid in the pesticide application zone, and the plants grew normally. Thereafter, the aphids began to rise.