The study was conducted through investigation and analysis of the rotation system, fertilization, grain yield and returning of stalk to the field in the suburbs of Yuanjiang city. In rice soil the input of N and P was grossly balanced with the output of N and P but the input of K was not adequate. In ramie soil P and K were balanced on the whole but there was surplus N. The contents of soil organic matter and tatal N were lower in ramie soil than in rice soil and N hydrolysed by alkali and available P, K were higher in ramie soil than in rice soil. Excessive N and P in rice and ramie soils als...
