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Population and Community Characters of Insect Pests and Their Natural Enemies and Control Tactics of Scirtothrips Dorsalis (Hood) (Thysanoptera: Thripidae)in GAP Leaf-picking Ginkgo Plantation

Author: LiMingGuang
Tutor: ZhengFangQiang；Wilham Schmid
School: Shandong Agricultural University
Course: Agricultural Extension
Keywords: Insect community Yellow tea thrips Natural enemies Population dynamics Spatial distribution pattern Tropism Prevention and cure Ginkgo
CLC: S763.7
Type: Master's thesis
Year: 2010
Downloads: 36
Quote: 0
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Abstract


2008-2010 yellow tea thrips and natural enemy populations ginkgo GAP Cai Ye Yuankun insect community structure characteristics, dynamic, yellow tea thrips spatial distribution and physical control with the pharmacy prevention study aimed Tancheng provide technical support for the production of high quality ginkgo biloba, to break down foreign technical barriers and increase exports. Ginkgo GAP leaf collection garden canopy part of the investigation, 22 kinds of insects, pests, 16 kinds of natural enemies and neutral insects. Yellow tea thrips insect communities in the highest dominance serious harm, is the the ginkgo GAP mining leaves the park's main target pests. Graminicola advantage of natural enemies, the advantage of natural enemies of yellow tea thrips. The optimal segmentation ginkgo GAP mining of Ye Yuankun insect communities pattern is divided into four timing structure, analysis of the characteristics of pests and natural enemies of each time period, and provide a scientific theoretical basis for the scientific control of yellow tea thrips and the protection and utilization of natural enemies . Dynamic of yellow tea thrips and major natural enemy populations were studied in detail. Studies have shown that the natural enemies of spiders especially graminicola yellow tea thrips good to follow the phenomenon is an important natural control factors. Ladybirds, lacewings and tiny flowers Pentatomidae yellow tea thrips also play a good joint control role. The spatial distribution pattern of yellow tea thrips ginkgo the GAP mining leaves Park is a negative binomial distribution, aggregation caused due to environmental conditions. The number of yellow tea thrips are different in different parts of the tree and time distribution performance for the lower part of the June gt; central gt; the upper, July (close to harvest) performance upper gt; Central gt; lower part. Yellow tea thrips different tropism different swatches, wherein the blue strong trend, followed sequentially as a white, green, yellow, gray and red. Blue plate top, including ginkgo tree canopy to the bottom of the blue plate distance 15cm hanging way best trap to the largest number of different suspension are also differences in the trapping effect of the thrips. Ginkgo Garden hanging blue plate yellow tea thrips can play a very good effect, up to 75%, a minimum of 44%, especially in the early use of trapping effect best. The screened effective pollution-free pesticides to combat yellow tea thrips Matrine botanical insecticide rotenone insecticide antibiotics kill more neomycin and physiological selective insecticide imidacloprid. Yellow tea thrips 3,4 instar nymphs habit of hiding pupation in ginkgo Park soil to use the phoxim with water irrigation method, can kill yellow tea thrips in the soil, the control effect is good. The preliminary analysis of the use of physical control and chemical control against yellow tea thrips economic, ecological and social benefits.

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CLC: > Agricultural Sciences > Forestry > Forest Protection > Forest Pest and Disease Control > All kinds of tree pests and diseases and their prevention
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