The relationship among aphids and natural enemies in the different aromatic plants intercropping plots of pear orchard Comparison analyses of scale insects and functional groups of natural enemy at jujube orchards intercropped with herbage The Application of The Gray System Theory on The Comprehensive Evaluation on of The Main Characteristics of Balsampears Grey system analysis on dominant natural enemies influencing Aphis gosspyii population Influence of natural enemies on population of Aphis gosspyii Chlorophyll Content and Chlorophyll Fluorescence Kinetics Parameters of Flag Leaf and Their Gray Relational Grade with Yield in Wheat The Application of The Gray System Theory on The Comprehensive Evaluation on of The Main Characteristics of Balsampears Study on Biological Control of Fall Webworm by Insect Natural Enemy Correlations between wild Polygonatum odoratum quality and main ecological factors.