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Wedelia trilobata responses to herbicides’ stress and its chemical control Pathogen identification, regularity of development and control measures of diseases on Atractylodes lancea Analysis on Vegetation Restoration under Different Management Measures on Maowusu Sandy Land A research on the eco-agricultural construction at Qiaopo Town-ship,Baihe County,Shaanxi province OCCURRENCE AND CONTROL OF TOBACCO WEATHER FLECK Research Progress of Quarantine Pest Carpomya vesuviana Status of pesticide registration and residue analysis for traditional Chinese medicine in China A Study on the Index of Prevention and Control of Ceracris kiangsu Tsai Effects of soil erosion control measures on soil organic carbon and total nitrogen in a small watershed Life habits of Moritziella castaneivora (Hemiptera: Phylloxeridae) and its control measures STUDIES ON BESAIA GODDRICA (NOTODONTIDAE,LEPIDOPTERA) The relationship between main cultivation management measures and the incidence of the rice black-streaked dwarf disease in Huanghuai area