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STUDIES ON EVOLUTION MECHANISM AND CONTROL STRATEGY FOR FARMLAND ECOSYSTEM IN LONGJING COUNTY STUDY ON REGULARITY OF OUTBREAK AND CONTROL IN GREY SPECK DISEASE OF SOYBEAN The dispersal mechanism of invasive plants based on a spatially explicit individual-based model and Remote sensing technology: a case study of Spartina alterniflora Study on the strategy of biological control of Eupatorium adenophorum by using Procecidochares utilis Alien Invasive Plants in Nanning, China ON THE CHEMICAL CONTROL STRATEGIES OF ARROWHEAD SCALE UNASPIS YANONENSIS INCITRUS GARDEN Desertification Problem and Its Control Strategy in Northern China The occurrence and control strategy of Malachium aquaticum in transplanted rape fields in Hubei Province THE PRELIMINARY DISCUSSION ON SOIL DESICCATION OF ARTIFICIAL VEGETATION IN THE NORTHERN REGIONS OF CHINA The invasive plant Tithonia diversifolia in China Susceptibility of Panonychus citri field populations to different acaricides Strategies to counter the invasion of exotic and harmful plant pests Occurrence situation and control strategy of Dendrobium diseases in large-scale farming system Establishment of design space for production process of traditional Chinese medicine preparation