Adhering to the " red line" of 1800 million mu of arable land is China’s arable land protection guideline and policy,and the " red line" places emphasis on bot
Wheat is one of the most important grain crops in China with great demand. It plays an important role to use phosphorus fertilizer for improving wheat yield. Th
China,as the world’s largest developing country,has long combined the common interest of the Chinese people with that of the people of all countries,and under