Effect of Rehmannia glutinosa water extraction on insulin resistance and gene expression of resistin in type 2 diabetes mellitus rats Study on the status of agricultural non-pointing source(NPS)pollution in Three-Gorges Area and its control countermeasures Study on the inter-species competition of Sassafras tsumu community in the mid-subtropics and the population density adjustment Study of Jarvis model on stomatai conductance of mandarin leaf Advance in the research on the mechanism of degradation of sulfonylurea herbicides in soils Developmental models of eco-agriculture in Shaanxi Province A loss estimation model and drought monitoring of wheat in mountainous areas of South Ningxia The preliminary practice on eco-agriculture engineering construction Simulation on the mathematical model of balanced fertilization in Pak。chio vegetable crop