Qi ye ke xue fa zhan de si kao yu shi jian. Kua yue shi fa zhan de li lun yu shi jian/ Geng xin zhu hun :: Qi ye ke xue fa zhan de si kao yu shi jian / Zhong guo nong ye fa zhan de si kao yu zhan wang/ Chao yue zi ben zhu yi de li lun yu shi jian. 宋德福?Agong qing tuan ti zhi gai ge de si kao yu shi jian Zhong guo qi ye ji tuan guo ji hua de li lun yu shi jian. Huan jing ke xue te se zhuan ye jian she si lu yu shi jian/ Huan jing ke xue te se zhuan ye jian she si lu yu shi jian / Wen hua ti zhi gai ge de tan suo yu shi jian.