China Agricultural Universily, Beijing 100094,China
ZHANG Chong-li
. 2007, (2): 85 -88 . 

京ICP备12031475号-3　京公网安备11010802021197号
Copyright © Journal of Agricultural Science and Technology, All Rights Reserved.
Tel: 010-82109848　E-mail: nykjdb@163.com; nkdb@caas.cn
Powered by Beijing Magtech Co., Ltd.