To ensure food security, firstly, it is extremely essential to speed up land circulation to avoid deserting land and to achieve the appropriate scale operation of land; Secondly, it is also essential to guarantee the use and character of land unchanged so as to ensure the production power of food. Nowadays, there is an impulse of ＂non-food＂in land circulation which gets serious and has threatened the production quality and production power of food because of the local goverments and rural collective organzations taking part in the course. The...
