中文摘要：

使用DID模型来评价黑龙江省农机合作社助农增收的绩效,模型估计结果表明：农机合作社社员与非社员相比,农户家庭总收入、工资性收入、财产性收入、转移性收入显著增加,经营性收入显著减少。因此,农机合作社作为新型农业经营主体,在助农增收方面效果显著。引入控制变量后,户主年龄与家庭收入呈负相关;家庭人数与家庭收入呈正相关;户主受教育程度、人均耕地面积、非农收入所占比重、是否在社内打工与家庭总收入、工资性收入、财产性收入、转移性收入呈正相关,与经营性收入呈负相关。

英文摘要：

DID model is used to evaluate the performance of agricultural machinery cooperatives assisting farmers to increase income in Heilongjiang province. The model estimation results show that compared with the non-members, the cooperative members households＇ total income, wage income, property income and transfer income increased significantly, operation income reduced significantly. Therefore, as a new type of agricultural management entity, the agricultural machinery cooperatives＇ effect is remarkable in assisting farmers to increase income. After introducing the control variables, age of farmers is negatively correlated with household income ; number of households is positively correlated with household income ; education level of farmers, farmland areas per person, proportion of non-agricultural income, whether work in the cooperatives is positively correlated with total income, wage income, property income, transfer income, negatively correlated with operation income.