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Studies of Seedling Inoculation of Frankia in Elaeagnus mollis Diels The prey preference of Orius sauteri on western flower thrips and two-spotted spider mite Appraising on harmony of regional agriculture system in national scale Interspecific Correlations among Bryophytes and among Bryophytes and Vascular Plants in Two Scales in Jinchuan Peatland TREE HEIGHT ANALYSIS IN 14-YEAR-OLD PINUS TABULAEFORMIS CARR. STANDS Applica tion of Rank-Sum Test in Checking the Effects of Thinn ingon the Growth of Planta tion Study and Appraisal of Drought Resistance Capacity of 41 Different Alfalfa Cultivars PLANT COMMUNITY DIVERSITY IN DONGLING MOUNTAIN,BEIJING,CHINA Ⅲ \ SPECIES ABUNDANCE RELATIONS OF SEVERAL TYPES OF FOREST COMMUNITIES Notes on the genus Elatostema(Urticaceae) Chemical constituents from frankincense Studies on the Priority Exploitation Ranking of the Wild Ornamental Plants in Mt. Shergyla Selectivity of Frankliniella occidentalis (Pergande) on different host vegetables THE BIOLOGICAL CHARACTERISTICS OF ACTINORMYCETES FRANKIA LIVING IN ROOTS OF CASUARINA Characteristics of Water Utilization in Border Row and Optimum Disposition Structure in Plantation in Arid and Semi-Arid Region