This experiment was carried out to explore the effects of microbial pesticides on prevention and control of cucumber downy mildew.Three kinds of microbial pesti
Family farm is an important carrier of realizing agricultural scale management,optimizing rural business organization structure,and impelling agricultural moder
The integration and development of grass-roots Party organizations and accurate poverty alleviation is the focus in social development in the new period. This i
Urbanization is an inevitable trend of economic development. It is an important indicator that reflects the industrialization and modernization of a country. In