我国草原生产力

发布时间：2018-03-18 14:42

本文选题：草原生产力　切入点：产草量　出处：《中国工程科学》2016年01期 　论文类型：期刊论文

【摘要】：分析我国草原植物生产和动物生产,比较国内外草原生产力。结果表明,在过去的30余年中,我国一部分草原产草量下降,局部变化不显著。世界草原对畜产品生产的贡献率为40.08%,中等收入国家为67.35%。全球24.1%的牛肉和31.9%的羊肉来自草原,低收入国家草原载畜量分别高出高收入国家和中等收入国家87.4%和66.4%,畜产品生产分别只有两者的37.3%和71.9%。适宜的放牧利用,可使我国的草原生产能力达到6.35×109畜产品单位(APU);全国草原单纯依靠放牧每年可产肉2.959×106 t,占全国肉类总产量的3.5%,占全国牛羊肉总产量的27.4%。通过草原畜牧业的现代化转型可接近高收入国家水平,增产潜力约为50%~200%。
[Abstract]:This paper analyzes the grassland plant production and animal production in China, and compares the grassland productivity at home and abroad. The results show that in the past 30 years or so, the grass production of some grassland in China has declined. The contribution rate of the world grassland to the production of animal products is 40.08, while that of the middle-income countries is 67.35. 24.1% of the world's beef and 31.9% of the mutton are from the grasslands. The stock-carrying capacity of grasslands in low-income countries is higher than that in high-income countries and middle-income countries in 87.4% and 66.4 respectively, and the production of livestock products is only 37.3% and 71.9 percent of the two respectively. The prairie production capacity of our country can reach 6.35 脳 10 ~ 9 livestock production units, and the national grassland can produce 2.959 脳 10 ~ 6 t of meat per year solely by grazing, accounting for 3.5% of the total national meat output and 27.4% of the total national production of beef and mutton. Through the modernization of grassland animal husbandry, the grassland can be transformed into a modern one. Type A is close to the level of high-income countries, The potential for increasing production is about 50% and 200%.
【作者单位】：草地农业生态系统国家重点实验室兰州大学草地学业科技学院;中国农业科学院草原研究所;西北农林科技大学动物科技学院;
【基金】：中国工程院重大咨询项目“中国草地生态保障与食物安全战略研究”(2012-ZD-7;2013-GCK-ZD-3) 长江学者和创新团队发展计划项目“草地农业系统耦合与管理”(IRT13019)
【分类号】：S812

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