摘要
调查了化防程度较高及不用药梨生产园的主要昆虫种群构成,并从多样性指数、种间相遇机率和均匀度等对昆虫多样性指标进行了分析。结果表明:化学防治梨园的昆虫多样性指数较低,很少使用农药的梨园昆虫多样性指数相对较高,但生态系统健康程度较低。
Main insects population in two kinds of pear orchards was investigated. In one kind of orchards pesticides were used in controlling pests, In the other kind of orchards no pesticide was used. The indexes such as Shannon-Wiener diversity indices, Probability of Interspecific Eucounter, and evenness were used to analyze the insects diversity. The results showed that the diversity indices in the orchards using pesticides was much lower than that in the orchards without pesticides. However, the health level of ecosystem in the orchardes using pesticides was higher than that in the other kind of orchards. This research provides theory basis to ecological control of pests.
出处
《河北农业科学》
2006年第2期22-25,共4页
Journal of Hebei Agricultural Sciences
基金
河北省自然科学基金资助项目(397430)
河北省农业科技园区资助项目0122928D)
关键词
种群
多样性指数
生态
滦河三角洲
沙地
Population
Diversity indices
Ecology
Luanhe delta
Sandy soil
