关键词: 食物安全；草地农业；食物当量；栽培草地；粮草轮作

Abstract:

Through analyzing the existing food safety model and food consumption trends in China, we found that the demand for rapid growth in feed will take up 70% of the food equivalent, which is causing great pressure on food safety. Thus the traditional single arable agriculture will be unable to meet peoples requirements for food. As a creative thinking about food safety, grassland agriculture contains enormous production potential and developing plant-eating livestock can solve the problem of feed lack. After years research, grassland workers in China have proposed various grassland agricultural innovation models on food security, such as rice/corn-Italian ryegrass rotation system of rural areas in south China, perennial mixed sown pasture system of hill country and pastoral areas in China, grass-crop rotation system of loess plateau area in China, the “company+breeding area/farmer specialized cooperatives+farm households” cornstalk-beef cattle breeding system in Hexi Corridor and perennial mixed sown pasture-“grain+grass+livestock breeding” system in the ecotone between agriculture and pasture in north China. The results showed that conspicuous effects could be achieved to save food, and increase production. Therefore, we can build efficient grassland agriculture system to protect food safety.

Key words: food safety, grass agriculture, food equivalent, arable meadow, grass-crop rotation