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油菜田昆虫群落涉及12目39科118种,其中害虫8目28科62种,天敌6目22科56种;以油菜蚜虫、菜粉蝶、黄翅菜叶蜂、兰跳甲和茎象甲等为优势害虫种群,天敌以七星瓢虫和食蚜蝇为主;各地优势种群的相对丰富度差距较大;在9~11月和3~6月间,群落生态优势度一直处于上升趋势,且以蚜虫类、甲虫类和粉蝶类的优势集中性指数最高。群落特征分析表明,陕西杨陵地区的丰富度、多样性和均匀度最大,耀县次之,乾县最小。
There were 118 orders, 39 families, 12 orders, 62 species, 28 orders, 28 families, and 6 orders, 22 families and 56 natural enemies. The rapeseed aphids, cabbage butterfly, yellow-winged bee, blue hopper, As dominant pest populations, the natural enemies were Ladybird and Hoverfly; the relative abundance of dominant populations varied widely; from September to November and from March to June, the ecological dominance of the community was always on the rise, Aphids, beetles and pink butterfly had the highest concentration index. Community characteristics analysis showed that the Yangling area in Shaanxi Province had the highest degree of richness, diversity and evenness, followed by Yao County and dry county.