Properties of Soil and Growth of Root Systems of Paddy Rice under No-Tillage Cultivation with Quick Cleaning-Stubble

Effects of no-tillage cultivation with quick cleaning-stubble on the properties of soil and growth of root systems of paddy rice were investigated.Results showed that continuous notillage cultivation helped to improve soil physical structure and the ability to maintain soil moisture and fertility.The contents of the organic matter,total N,total P,available N,available K and instant P in plough layer by no-tillage cultivation were higher than those in ploughing cultivation(CK),but Zn and total K were lower than CK.No-tillage cultivation improved the growth,development and distribution of rice root systems,and enhanced absorption activity of root systems as well.