论文部分内容阅读
从1984年以来,在我县棉花害虫综合防治试验示范的同时,我站结合测报,对棉田天敌种类及优势种、消长因子、保护利用自然天敌措施进行了调查和考察。现综述于下:一、棉花害虫天敌资源(一)棉田天敌种类及优势种。通过几年来灯光诱集(20瓦黑光灯,通宵亮灯)和在夏熟作物麦、油、豆套种棉田5天一次的系统调查,初步查明:我县棉花害虫天敌共有
Since 1984, in our county cotton pest integrated control pilot demonstration, I station combined with the report, the natural enemy species and dominant species, growth and decline factors, the protection and utilization of natural enemies measures were investigated and investigated. Are summarized in the following: First, the natural enemies of cotton pests resources (A) cotton varieties and dominant species of natural enemies. Through several years of light harvesting (20-watt black light, overnight light) and 5-day trial of summer wheat, oil and bean intercropping cotton fields, it was initially ascertained that the total number of natural enemies of cotton pests in our county