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红铃虫是本地棉花上发生、危害最重的一种害虫,农户对其防治十分重视,化防费用约占整个棉田用药费用的60%以上。群众用药时,常出现片面追求防治效果,盲目增加药量、水量及防治次数的情况,虽然最终危害程度有很大的减轻,挽回损失较高,但增大了药本、工本,经济上往往得不偿失,且增加了环境污染,也易引起害虫抗性的产生,带来许多不良影响。相反,若用药量、用水量过低,则由于植株高大,靶标部位分散,着药部位不周,防效
Red bollworm is a pest occurring on the local cotton and endangering the hardest. Farmers attach great importance to its prevention and treatment, and the cost of chemical prevention and prevention accounts for more than 60% of the total cost of the cotton field. In mass medicine, there often appears one-sided pursuit of prevention and control effects, blindly increasing the dosage, amount of water and the number of prevention and control. Though the ultimate harm is greatly reduced and the recovery loss is relatively high, the cost and cost are increased. Not worth the candle, and increased environmental pollution, but also easy to cause pest resistance, resulting in many adverse effects. On the other hand, if the dosage and the amount of water used are too low, the parts of the target are scattered,