STUDIES ON NICHES OF THTRANYCHUS VIENNENSIS, PANONYCHUS USMI AND THEIR PREDATORY ENEMIES(Ⅲ).MICROCLIMATIC NICHES A Study on the Population Dynamics and Damage of Red Spider Mite (Tetranychus viennensis) ON NICHES OF TETRANYCHUS VIENNENSIS,PANONYCHUS ULMI AND THEIR PREDATORY ENEMIES──TROPHIC NICHES Volatile constituents in leaves of Rhus typhina and their influence on selective behavior of two species of mites Effects of the Chloroform Extracts of Kochia scoparia to Several Enzyme Systems in Tetranychus viennensis Acarocidal Actions of Wikstroemiae chamedaphne against Tetranychus viennensis Sublethal effects of selected insecticides on the hawthorn spider mite, Tetranychus viennensis Resistance of Tetranychus viennensis Zacher to acaricides and synergistic effect of pesticide combinations The Toxicities and the Effects on Several Enzyme Systems of the Extracts of Tateges erecta against Tetranychus viennensis The Effect on the Selectivity of Tetranychus viennensis for Different Host Plants by Vilatiles From Plant THE EFFECTS OF EXTRACTS OF TATEGES ERECTA ON ACTIVITIES OF SEVERAL ENZYME OF TETRANYCHUS VIENNENSIS ZACHER THE INHIBITING EFFECTS OF THE EXTRACTS OF TAGETES ERECTA ON THE ACTIVITIES OF ESTERASE ISOENZYME IN TETRANYCHUS VIENNENSIS ZACHER THE EFFECTS OF THE EXTRACTS FROM STELLERA CHAMAEJASME L.ON THE BIOLOGICAL AND ENZYME ACTIVITY OF TETRANYCHUS VIENNENSIS ZACHER Effects of Kochia scoparia Extracts to Activities of Several Enzymes of Tetranychus viennensis Functional response of predatory thrips Scolothrips takahashii Prisener to Tetranychus viennensis Zacher STUDIES ON NICHES OF TETRANYCHUS VIENNENSIS, PANONYCHUS ULMI AND THEIR PREADATORY ENEMIES: (Ⅰ). SPATIAL AND TEMPORAL NICHES Primary Studies of Acarocidal Activity of Wikstroemia chamedaphne against Tetranychus viennensis Acarocidal Activity of Different Parts of Kochia scoparia against Tetranychus viennensis Determination on the Selectivity of Two Kinds of Spider Mites to Ginkgo biloba Leaves and Foliar Volatiles