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1991年,一四七团为防治棉叶螨共支出110余万元,相当于一个中型连队的年生产总值,所以单靠化学农药消灭害虫不能达到预期目的。近年来我们在棉田建造诱集带防治棉叶螨,效果较好。1、选用葵花作诱集带选用葵花作诱集带的优点是:(1)葵花属蜜源植物,可增加棉叶螨天敌寄生蜂和寄生蝇的寿命。进入6月下旬,正是各种昆虫繁殖的盛期,需大量的食料,而此时葵花已进入花蕾阶段,可为天敌摄取。(2)葵花是早春作物,它最低发芽温度为4—6℃,最适发芽温度为15—16℃,地膜棉播种地温需稳定在12℃以
In 1991, a total of more than 110 million yuan was spent on preventing and controlling spider mites in the 147th Corps, equivalent to the annual gross product of a medium-size company, so pesticide alone could not achieve its desired purpose. In recent years, we have built trap in the cotton field to control cotton spider mites, the effect is better. 1, the use of sunflower as a trap with the selection of sunflower as a trap with the advantages of: (1) Sunflower is a nectar source, can increase the natural enemies of spider mite parasites and parasitic flies life. Into the end of June, it is the peak of all kinds of insect breeding, requiring a lot of food, but this time the sunflower has entered the bud stage, for natural enemies uptake. (2) sunflower is a crop in early spring, its minimum germination temperature is 4-6 ℃, the optimum germination temperature is 15-16 ℃, mulching cotton ground temperature needs to be stable at 12 ℃