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75%3911乳油拌棉种防治棉蚜是我省棉农习惯的使用方法。但是近几年来棉农反映防治效果不佳。为此,我们在实践中不断探索,总结出了两开一凉浸种法,防蚜效果很好,残效期长达47天以上,与30%呋喃丹拌种防蚜效果相同。具体方法是:每亩用75%3911乳油50克倒入盛有1.5公斤凉水的缸或锅(也可在地上挖坑再铺塑料布)中,再兑入开水3公斤拌干棉种3.5—4公斤,盖好约1小时,待药液被干棉种吸完后取出,稍晾堆闷24小时,当有三分之一棉种萌动,第二天即可播种。棉种在吸水的同时也吸入了3911,出苗后茎叶含有一定量的3911,故而防蚜时间长,麦收前基本上不需要用药。
75% 3911 mixed with cotton seed cotton control aphid cotton farmers is the habit of using the method. However, in recent years, farmers have reported poor results in prevention and treatment. To this end, we continue to explore in practice, summed up the two open a cool soaking method, aphids good effect, the residual effect of up to 47 days or more, and 30% carbofuran seed dressing the same effect. The specific method is: per mu with 75% 3911 EC 50 grams poured into 1.5 kg of cold water in the cylinder or pot (also digging on the ground and then lay plastic sheeting), and then into the boiled water 3 kg mixed cotton varieties 3.5- 4 kg, covered for about 1 hour, until the liquid was dry cotton seed absorption after the removal, drying a little boring boring 24 hours, when one-third of cotton germination, the next day can be sown. Cotton species also inhaled 3911 at the same time, after emergence of stems and leaves contain a certain amount of 3911, and therefore a long time aphids, wheat before harvest basically do not need medication.