间作苜蓿草枣园地表优势昆虫种类及优势度动态分析

了解间作牧草枣园地表昆虫种类及其动态变化,有助于有效地控制枣树害虫。2009年7—10月,研究了间作苜蓿草枣园地表昆虫群落物种组成及优势度动态变化。结果表明,7—10月份枣园地表昆虫群落总计9目42科,优势种是长蝽科和果蝇科。地表昆虫群落结构随着季节气温变化而不断变化,优势天敌昆虫有步甲、草蛉、缘蝽和食蚜蝇,优势天敌害虫有叶蝉、蝽和长蝽。枣草间作不仅可增加枣林植被的多样性,扩大捕食性天敌昆虫的生态容量,而且有助于实现枣树生产可持续发展和有害生物生态调控。

Dynamic Analysis of Species and Dominance of Insects on the Soil Surface in the Jujube Orchard Intercropping Clover

Understanding the species and dynamic changes of insects on the soil surface of the jujube orchard with forage intercropping is beneficial for the effective pest management of jujube tree pests. Species composition and dominance dynamics of insects on the soil surface in the jujube orchard intercropping forage was conducted from July to October 2009 in our institute. The results showed that there were 9 orders and 42 families insects on the soil surface of jujube orchard from July to October. The dominant species were the long-bugs and fruit flies. Community structures of insects on the soil surface were changing with seasons. Dominant enemy insects were lacewings, bugs and hover flies edge, and dominant pest insects were leafhoppers, bugs, and long piles. Jujube intercropping with forage not only increased the diversity of vegetation, but also the ecological capacity of predators enemy insect. It was henefical to implement sustainable development and ecological control of pests in the jujube production.