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近年来信阳茶区不断遭受虫害的困扰,为了有效控制害虫、提高茶叶的品质和产量,2007—2009年对信阳有机茶园的主要害虫和主要天敌种群动态进行了调查。调查方法包括田间实地调查、查阅历史资料和访问茶农。结果显示,有机茶园的主要害虫为茶尺蠖、茶毛虫、假眼小绿叶蝉;主要天敌为蜘蛛类、瓢虫类和寄生蜂类。研究了茶尺蠖、茶毛虫和假眼小绿叶蝉的发生动态,6月份是其发生高峰期。分析了茶毛虫与天敌种群数量的相关性,其关系式为y=0.8159x+3.9514,相关系数为0.7313;假眼小绿叶蝉与天敌种群数量的关系式为y=0.482x+6.0326,相关系数为0.7960;天敌对茶毛虫和假眼小绿叶蝉有较好的控制作用。天敌在5、6月份也有较高的种群数量,在这个时期利用天敌控制害虫是可能的。研究结果对信阳茶园害虫的有效控制具有重要的参考价值。
In recent years, Xinyang Tea Districts continue to suffer pests, in order to effectively control pests and improve the quality and yield of tea, 2007-2009 Xinyang Organic Tea Park, the main pests and major natural enemy population dynamics were investigated. Methods of investigation include field field surveys, access to historical information and visits to tea farmers. The results showed that the main pests in organic tea plantations were Tea Scales, Tea Caterpillars and Green Leafhoppers. The main natural enemies were arachnids, ladybugs and parasitoid. Studied the dynamics of tea scrofa, tea caterpillars and false green leafhoppers, which peaked in June. The correlation between the population numbers of the tea caterpillars and the natural enemies was analyzed. The correlation coefficient was y = 0.8159x + 3.9514, and the correlation coefficient was 0.7313. The relationship between the numbers of the green cicadae and the natural enemy population was y = 0.482x + 6.0326, and the correlation coefficient Was 0.7960; natural enemies had better control effects on the tea caterpillars and the green leafhoppers. Natural enemies also have higher populations in May and June, and it is possible to use pests to control pests during this period. The research results have important reference value for the effective control of Xinyang tea garden pests.