The maximum geld growth range of wheat yield per unit in China is analyzed from three aspects including photosynthesis production potential of wheat, the changing trend of per unit wheat in the previous years and potential of distribution area agricultural crops. In the paper, me potential of...

Compared with that in other countries, the issue of fertility in China is more complicated because of its restriction policy or system. Several major hypotheses have been proposed to explain and predict the impact of migration on China’s fertility regardless of China’s real situation....