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Ecological Control Of Pear Insect Pests And Non-pollution Production Technology In Lanshan Country

Posted on:2006-11-11Degree:MasterType:Thesis
Country:ChinaCandidate:Q X XieFull Text:PDF
GTID:2133360182970412Subject:Plant protection
Abstract/Summary:PDF Full Text Request
The plantation of Lanshan pear has been developed since 1997. Now the growth of development scale in Lanshan county has reached 36000 mu,.and insect pests prevention is especially important. In this paper the background of the ecological control on Lanshan pear Ecological control is an important strategy of pest management, and its peculiarity, principles and methods were discussed. Ecological control on Lanshan pear insect pests was done according to above idea and practice obtained from the former research. Followings are the main studies in this paper.1 Investigation of insect community. There are 28 species of insects and mite pests from 25 Familias,7 Ordos ,and 2 Classes in the plantation. Leaf-feeders(Lepidoptera) are the major onesJO species,35.71% of the insect pests community, Leaf-suckers(Homoptera)are the second ones,6 species ,21.43% of the insect pests community,and insect pests of Coleoptera are the third ones,5 species ,17.86% of the insect pests community, and there are some Hemiptera, Hymenoptera, Diptera,Acarina pests. There are over 16 species of natural enemies from 12 Familias, 8 Ordos ,and 2 Classes.Predatory ladybirds and Carabidae, parasitic wasps, spiders are the dominant species.2. Dynamics of insect pests community.The seasonal pattern of the community is divided into 4 phase, one is from October- December the year before to January-March,the second one is April-May, the third one is June-July, the fourth one is August-September Some parameters of the community show that species richness of April -September is the highest, diversity index of April-May is the smallest, evenness of April-September is the smallest, dominant indices of April -September is the highest.3. Test of Acta against Cletus trigonus (Dallas).Applied Acta against Cletus trigonus (Dallas) during its peak occurrence period show that Acta exert excellentcontrol effect against Cletus trigomis (Dallas),the result of plot trial show that Acta 10000 times diluting solution, 12000 times diluting solution and 15000 times diluting solution.The results of applied Acta 12000 times diluting solution against Cletus trigomis (Dallas) show that the population reduce is 59.47% in 1 day,89.21% in 3 day, 95.13% in 5 day ,96.01% in 7day ,and 98.96% in lOd respectively.By using the investigation results, we get some new regulations of insect pests on Lanshan pear and ecological control technology According to control the pests' integrated control program, the measurements for non-pollution are as follows: base chosen and soil improvement, variety chosen and planting in turns reasonably, planting adjustment, strengthening the management ,pest integrated control, and so on.
Keywords/Search Tags:pear, investigation of insect pest, Ecological control on insect pests, Non-pollution production technology
PDF Full Text Request
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