因人增地减和提高生活质量的需要,本世纪我国食物安全和营养问题将面临严峻的挑战,尤其值得关注的是,造成我国食物需求问题的实质是饲料粮的短缺日益加剧,靠传统的以粮为主的种植方式饲养畜禽,由于产量低,质量差,已很难满足快速发展的畜牧业饲料需求,因此,种植经济拉动能力 Due to the need of increasing population and increasing the quality of life, the issue of food safety and nutrition in our country will face severe challenges in this century. Of particular note, the crux of the problem of food demand in our country is the growing shortage of feed grains. Due to the low yield and poor quality of livestock-poultry raised by grain-based cultivation, it has been very hard to meet the needs of the rapidly growing livestock feed industry. Therefore, the cultivation of economic stimulants