[CJ-13-9]The regional difference of Farmers' adoptation of new seed varieties-based on 640 maize farmers survey in major maize production provinces

Author：　　Periodical： 　　Source：

Author：Xu, Zhigang, Sen Zhang, Haiyan Liu, Huanguang Qiu　　Periodical：Seed industry in China, No. 3 (2013): 37-40.　　Source： ccap