论文部分内容阅读
苹果梨是我省优质名牌品种,近期发展迅速,面积日益增加。但近年来果实受梨黄粉蚜危害,受害率高达83.3％,造成大量烂果,影响产量和贮藏。我场自1982年以来进行了调查和防治试验,曾以缺素症(缺硼、钙)和李始叶螨的对应防治,均未见效。1985年承担省瓜果公司防治课题,进一步开展试验研究,结果证明为梨黄粉蚜危害。通过调查掌握了生活史并总结出有效防治方
Apple pear is a high-quality brand-name variety in our province, the recent rapid development, increasing area. However, in recent years, the fruit is harmed by the pear aphid, and the rate of damage is as high as 83.3%, resulting in a large amount of rotten fruits, affecting the yield and storage. My field since 1982, conducted a survey and prevention and control experiments, had to lack of disease (boron deficiency, calcium) and Lee spider mite, the corresponding prevention and treatment were not effective. In 1985 the province to bear the fruits and vegetables company prevention and control topics, to further carry out pilot studies, the results proved to be pear powder aphid harm. Mastered through the investigation of life history and summed up the effective prevention and treatment side