In order to investigate the effects of different straw returning methods on rice yield and soil nutrients, four different straw returning methods were set up: carbonized straw returning(CR),crushed straw returning (FR),straw direct returning(ZR),and straw non-returning(BR). Variance and correlation analysis were conducted between the data and rice yield by measuring rice yield,soil organic matter,total potassium,total nitrogen,total phosphorus,available potassium,available phosphorus and alkali-hydrolyzed nitrogen. The results showed that straw returning had significant effects on rice yield a...
