Study On The Composition Of Natural Enemy And Their Role In The Intercropping Orchard Of Jujube In Xinjiang

The intercropping pattern of cropping patterns as the main way of xin jiang jujube orchard, Jujube intercropping cultivation model not only take into account the production of grain and other crops,but also made gains jujube industry. For different crops repeated use of chemical pesticides, and different crops in different management methods, not only undermines the living conditions of jujube arthropod, especially for major natural enemy population formed a devastating blow.Therefore, By studying of the intercropping arthropod community species, The occurrence of major pests and natural enemies, The predation of major natural enemies of major jujube pests,Analysis the role of natural enemies controlling, Benefit for choose the best way of natural enemies protection strategies, The results as follows:(1)Xinjiang Awat County jujube orchard arthropod community belong to 2 classes, 12 orders, 45 families and 63 species. Different intercropping Jujube orchard model arthropod community number of species、uniformity index、stability indexes、And advantages concentration index have some differences.(2)Different intercropping model of Jujube orchard with major natural enemies and pests occurrence regularities have some differerence, Wherein jujube- wheat interplanting garden close to the occurrence of the advantages of Chrysoperla sinica Tjeder natural enemies occurred in a wheat field; The intercropping garden of Jujube- cotton, Due to Tetranychus truncatus Ehara can forge two crops, This kinds of planted mode promote Tetranychus truncates Ehara occurrence,Enriched Tetranychus truncates Ehara Foraging range, Against their prevention and control.Jujube orchard arthropod community Communities relatively simple and lower stability,Pest-prone hazards.(3)Study Life History of Chrysoperla sinica Tjeder,it occurre 5 generations one year in Awat country,and spawning have certain characteristics, Prolific in the crop Leaves back of pests and lessest on stems.(4) The predation of three main adults natural enemies(Chrysoperla sinica Tjeder 、 Stethorus punctillum Weise 、 Scolothrips takahashii Priesner) to Tetranychus truncates Ehara different densities belong HollingⅡ type, The chi-square test, Measured values and theoretical values have no significant difference, can show all kinds of natural enemies of predator control action.