The great potential of the model of saving food grassland animal husbandry

The modern animal husbandry includes confined animal husbandry and grassland animal husbandry. The agriculture is inititated from adaptable grazing raising in which grazing livestock chases grass and water resources,then developes into modern intensive and efficient grassland animal husbandry.It is a important part og grassland agro-ecosystem.Comparing with the confined animal husbandry,the grassland animal husbandry wins the advantage of saving resources and having high quality,can enhance productivity and promote ecosystem development healthily.Our agricultural policy used to emphasize on the grain as the key link,forming‘pork-grain’system. Unilateralism emphasizing the confined animal husbandry for a long time consumes huge of grain resulting in the productivity depressed and ecosystem health depraved. Because of the area of hilly country on account of 70% of total area, cultivable land is no more than 12%,thus the land resource of non-cultivable on account of 80%~90% contains huge productive potential if we replace the traditional agriculture by grassland agro-ecosystem.For example when crop-forage rotation is put in force,it can increase 4×10~7 hm~2 Arable Land Equivalent Unit(ALEU) in southern China,4.93×10~7 hm~2 ALEU in northern China, the total productions are increasing 8.9×10~7 hm~2 ALEU and 1.6×10~(9) t crude protein. Implementing grassland agricultures will make the food safety to be insured and economic opportunities for the farmers to be increased .