Effects of Alteration for Cropping System in Paddy field on Crops Growth and Soil Nutrient Content
曾希柏,孙 楠,高菊生,王伯仁,李莲芳
Scientia Agricultura Sinica . 2007, (6): 1198 -1205 .  DOI: 10.3864/j.issn.0578-1752.at-2006-7980