Effects of straw incorporation modes on microbial activity and functional diversity in sandy soil Physiological activity and material production in processing tomato under continuous cropping Enzymological regulation of soil nutrient cycle in the piedmont region of North China Plain Effects of pesticides on antioxidant enzyme activities and related physiological indices on cucumber seedlings Characteristics of soil ammonia volatilization and the absorption and utilization of nitrogen, phosphorus and potassium of pepper under slow-release fertilizer application Effect of intermittent drought on growth, antioxidant capacity and digestive enzyme activity of Pomacea canaliculata Effect of temperature on antioxidation mechanism of wheat (Triticum aestivum L.) seedlings under salt stress Effects of wind and wind-sand flow on membrane permeability and membrane protection system of corn seedling leaf Effect of Ceratocystis fimbriata infection on antioxidant enzyme activity of sweet potato root Biological factors influencing nitrogen transformation in wheat fields of lime concreted black soils and their response to different nitrogen supplications