Firstly,this paper analyzes the cause of obstacles to continuous cropping of vegetables,and then introduces the soil ecological remediation technology used for
In order to determine the best sowing date of the main cultivar Yumi 2 of Shaanxi Province in western Heilongjiang Province,taking Yumi 2 as experimental materi
Empirical study on market concentration rate and market performance of China’s Swine Industry indicates that higher market concentration rate brings higher ove