Countermeasures and Suggestions to Enhance the Actural Effectiveness of Rural E-commerce Poverty Alleviation——Based on An Investigation of Shangluo,Ankang and Hanzhong in Shaanxi Province HUBEI AGRICULTURAL SCIENCES . 2018, (18): 137 -140 .  DOI: 10.14088/j.cnki.issn0439-8114.2018.18.034