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辽宁为我国苹果主要产区,年产量占全国80%左右。过去由于桃小食虫为害,损失很大,受害严重的年份和地区,被害果达到30—50%。57—58两年在当地党政重视和积极领导下,采用树上树下同时并进的歼灭措施进行大力防治,效果极为显著,1958年被害率压低到5%左右。达样的效果,虽系综合防治的结果,但两年来普遍采用666地面处理是取得显著防治效果的主要关键之一。为了进一步提高现有666地面撒粉措施的防治效果,发挥这一措施的更大作用,以及合理地使用666等,仅就试验和工作中的体会提出以下几方面的问题,供生产上参考:
Liaoning is the main apple producing area in China, accounting for about 80% of annual output. Peach insects in the past due to damage, loss, severe damage in the years and regions, victims of fruit reached 30-50%. 57-58 In the past two years, with the emphasis and active leadership of the local party and government, vigorous prevention and treatment were carried out with annihilation measures under the trees at the same time and the effect was extremely remarkable. The death rate was reduced to about 5% in 1958. Although the result of comprehensive prevention and control is as good as the result of comprehensive prevention and control, the common application of 666 ground treatment in two years is one of the key points for achieving significant prevention and control effects. In order to further improve the prevention and control effect of the existing 666 dusting on the ground, to play a greater role in this measure, and to make rational use of 666 and so on, only the following aspects of the experiment and work experience should be raised for production reference: