Study On Relationship Of Between Soil Animals And Soil Elements And Pests Biorational Prevention And Cure In The Jujube Orchard Utilizing Membrane

Relationship between soil animals and soil elements in the jujube garden, the higher soil elements is, the higher the diversity index value and evenness index value of insect community of jujube yard is, the more groups and total numbers of soil animals is; Evenness index value, diversity index value and index of dominance was decided by groups and total number of every kind of group in community, the more index of dominance is, the smaller index of evenness and index of diversity is; Soil physical attributes depends on soil structure and texture , and bulk density depended on menial constitution ,texture and their array etc , though investigate 6 plots , the kind and number of soil animal is relative to soil bulk density ,when bulk density is small and soil is loose ,the kind and number of soil animal is big . In the same plot soil. With soil depth increased, bulk density increase, soil animal reduced. In the trial, with two kinds of pesticides sprayed and membrane was adopted to prevent and cure pests. The measure that using membrane and pesticide (GongFu and AWeiJunsu ) can effectly prevent and cure the Geometridae of Lepidoptera ,the Serica orientalis Motsehulsky and Curculionidae of Coleoptera ect , among which the prevent and cure efficiency of water-osmosis plastic membrane is more evident than that of convention plastic membrane ;The effect was better when put the pesticide between two layers water-osmosis plastic membrane ; At the same time effect of using Aweijunsu was better than that of GongFu ;Though all kinds of indexes in the soil of jujube orchard , and which had little effect on soil elements , organic content improved , the value of pH decreased, N,P,K content of soil improved , but the different was not apparent;The numbers of families and kinds of insect community decreased in jujube orchard , the value of evenness index and diversity index decreased at the same time , but the different was not apparent .