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兵团植棉面积达160多万亩,占作物面积的14％以上。棉田害虫发生种类较多,但对棉花产量威胁较大的害虫为棉铃虫。由于多年使用DDT、666等有机氯农药,棉铃虫等害虫产生了抗药性,亩用药量逐年加大,用药次数逐年增多,亩成本增加,防治效果却逐年下降,造成减产严重。 为了取代DDT、666等有机氯农药,并探求适应我垦区防治棉铃虫的高效低毒新农药品种,81—82年我们引进了英国卜内门公司生产的25％氯氰菊醋、10％氯氰菊醋两种剂型,在兵团农场进行了防治棉田棉铃虫的多点试验、示范,面积共达千亩以上。从综合各试验点情况看出,氯氰菊酯可有效地控制棉铃虫危害,不仅增产显著,且改善纤维品质,提高经济效益。
Corps cotton area of more than 160 million mu, accounting for more than 14% of the crop area. There are many kinds of pests in cotton fields, but the bollworm is the one that threaten cotton production. Due to years of DDT, 666 and other organochlorine pesticides, cotton bollworm and other pests have become drug-resistant, increasing the dose of mu has increased year by year, increasing the cost of mu, the control effect has declined year by year, resulting in serious production cuts. In order to replace organochlorine pesticides such as DDT and 666 and explore new high-efficiency and low-toxicity new pesticides that can adapt to the control of cotton bollworm in our reclamation area, we imported 25% of cypermethrin vinegar, 10% chlorine Cypermethrin vinegar two formulations, carried out in the Corps farm cotton bollworm multi-point test, demonstration, covering an area of more than acres. As can be seen from the situation of all the test points, cypermethrin can effectively control the damage of cotton bollworm, not only increase yield significantly, improve fiber quality and increase economic benefits.