China’s grain production cost has risen constantly since 2003. This paper starts from the grain production cost changes of unit area and unit quality,to analyz
Sugarcane(Saccharum spp.) is a large perennial herbaceous plant that is cultivated in tropical and subtropical regions of the world,and it is also one of the mo
Intermediate trader plays an extremely important role in marketing,production,and operating of China’s feed and veterinary drug enterprises. China’s feed and