摘要
在五种不同管理类型的枣园中,对天敌昆虫群落结构特征进行了分析和研究,结果表明,枣园天敌昆虫群落结构指数随季节而变化,随枣园植物多样性的提高而增加。在不同管理类型的枣园中天敌昆虫群落结构指数也有一定的差异,有草枣园与未用药枣园的天敌昆虫的物种数、总个体数及多样性指数等均显著大于其他类型的枣园,多样化的枣园生态系统比纯作系统具有更为丰富和多样的天敌昆虫。由此可见,植物多样性的增加能使天敌昆虫的种类增多,通过调整作物间作结构,改善天敌昆虫的生存环境,减少用药次数,来增大天敌昆虫的种群数量。
Studies on the structure and characteristics of major natural enemies communities in five different jujube yards were conducted in the suburb of Taigu County. The results show the more the numbers of plant species, the bigger in richness of family and species individuals in the jujube yard; The abundance of family and species individuals decreased after insecticide application. The richness of family and species individuals changed with season. There are obvious differences of the number of family and species individuals in five different jujube yards. The season dynamics of relative abundance changed with temperature and food; There are Obvious differences of the seasonal dynamics of community index in different jujube yards. Regulating crop-planted and decreased insecticide increases natural enemies.
出处
《山西农业大学学报（自然科学版）》
CAS
2006年第1期16-18,共3页
Journal of Shanxi Agricultural University(Natural Science Edition)
基金
国家自然科学基金资助项目(30170759
30571506)
山西省归国留学人员基金资助项目(2004047)
关键词
枣园
天敌昆虫
群落结构
Jujube yard
Natural enemies
Structure of community
