Study On Investigation Of Natural Enemies In Tea Gardens In Tai’an

Now the tea garden heavily use pesticides to control pests, On the one hand, increasedpest resistance, on the contrary, Making it harder for pest control. On the other hand madeexcessive pesticide residues, Which limits the development of tea industry, With the methodof biological pest control becomes the most effective way to solve this problem. so, the testsite at native place. I surveyed natural enemy resources in Tai’an tea garden, and researched it.The place chosen for the testing was the most representative tea plantation in tai’an--inorganic Nv’er Tea from Taishan manufacturing base(taishan tea garden). location and regularsurveyed all kinds of natural enemies. By identification to get the list of natural enemies intai’an garden. Summarized the occurrence rules of main natural enemy resources. The mainresults were as follows:1. By tracking survey, found that tea garden98kinds of natural resources, including11predatory natural enemy insects belonging to5orders and7families.and38parasiticalnatural enemies belonging to8families. and40spiders belonging to13families, and9entomogenous fungi.2. In the tea garden spider resource investigation，From May2010to February2012,collected24batches of spiders. Totaling1815, belonging to13families40generas, thedominant spiders were Trochosa suiningensis、Pardosa astrigera、Coelotes taishanensis andAnahita fauna. Through the study of population change,We fond that different populations ofannual dynamically changing、full incidence period were different.There were spiders all theyear in tai’an garden, full incidence periods. AS the largest number spider, Pardosa astrigeraarose three full incidence periods in April,july and November. late August was the fullincidence periods of Trochosa suiningensis. the number of Anahita fauna was at a peak inearly July. and it arose the second peak in late September and late March. Coelotestaishanensis arose the full incidence period in early September.3.A year in both parasitoids occur. In a year,a total of two parasitoids Chengfa period, forthe first time in june, July, second occurred in the month of September~November. In addition, through the change of population analysis: Aphidiidae on tea aphid control effect, Mymaridae has following obvious effect of Empoasca vitis.4.In the acquisition of the4batch of tea garden soil samples were obtained, identificationof entomogenous fungi9, were deuteromycetes. Divided into3genera, including3species ofBeauveria, Metarhizium species belonging to2genera,4species of the genus paecilomyces. 9kinds of fungi in certain control effect on tea aphid has,and thenon the9species of entomogenous fungi were determined pathogenicity on tea aphid.5. in the survey on the acquisition of insect natural enemies of predator12, belonging to5orders,7families, and the number of Calosoma maderae chinenseKirby, Carabus lafossei coeles Stew, Coccinella septempunctata Linnaeus, Sphedanolestes impressicollis Stal and other resources, and a long period, plays an important role in the regulation of growth and decline of natural populations of Lepidoptera, Coleoptera, Hemiptera and other pests.