STUDY ON THE COMPOUND SPECIES ACTION THRESHOLD OF RANGELAND GRASSHOPPERS Chemical constituents in leaves of Magnolia officinalis var. biloba THE APPLICATION OF FUZZY CLUSTER ANALYSIS FOR DIF-FERENTIATING THE SUBREGIONS OF NON-MIGRATORY GRASSHOPPERS IN Y1MENG MOUNTAINOUS AREA Nocturnal Migration of Grasshopper(Acrididae:Oedaleus asiaticus) Effect of EPV on the Development and Fecundity of the Host by Use of Grasshopper Mathematical Demonstration for the Ecological Effects of Environmental Factors on Grasshopper Community The Determination Capacity for Eaten of Several Species Grasshoppers in Grassland in Outside Cage Condition The mass Production and Application of Nosema Locustae Against Grasshoppers Control Effects of Applying Nosema Locustae Bait Mixed with Cascade Bait on the Populations of Rangeland Grasshopper The responses of grasshoppers and their natural enemies to soil humidity and slope in Mahuang Mountain, Ningxia Chemical constituents in Amaranthus spinosus The Occurring and Control Situation of Grasshopper in the Grassland of China (Review) Study on the Mortality and Competition of Three Dominant Grasshoppers (Orthoptera:Acrididae) in the Steppe Chemical constituents of Ardisia faberi INVESTIGATIONS OF THE SPECIES AND BIOLOGY OF GRASSHOPPERS IN HIGH MOUNTAIN GRASSLAND IN GANSU PROVINCE Comprehensive evaluation and risk assessment of grasshoppers’habitat based on a projection pursuit model Reasons for an outbreak of grassland grasshoppers and sustainable management strategies for them ITS2 Sequence Analysis of Ten Grasshopper Species and Different Geographic Populations of Oedaleus asiaticus in Inner Mongolia Grassland