土业园地 → 欢迎下载欣赏(更新时间:2014年6月19日)

F-144 土业园地 (第144期) 2012.3.19
Field for Artificial Soil TechnologyAST(№144)
作者:李鹏飞 AuthorLi Pengfei March 19, 2012
My Web:www.tuyelt.com Telephone Number:13043864167

世界粮食生产概况
Survey of production grain in the world

    

    1950年全世界粮食产量为6.3亿吨,1990年全世界粮食产量为17.81亿吨,2000年全世界粮食产量为20.6亿吨,2011年全世界粮食产量为23.2亿吨,就全世界而言,粮食供求关系基本上是平衡的。问题是世界各国的粮食生产状况差别很大,有的国家限制粮食生产,闲置大量耕地,而有的国家则因缺少耕地而发生饥荒。世界上缺粮国家主要分布在非洲,如埃塞俄比亚、伊拉克、菲律宾等,他们的问题容易解决,土地资源不缺,缺少的是资金和技术。

 

世界粮食生产概况
Survey of production grain in the world

World grain output was 630 millions tons in 1950, 1.781 billions tons in 1990, 2.06 billions tons in 2000, 2.32 billions tons in 2011,Today in the world the supply and demand of grain keeps the basic equilibrium. The question is that there are huge difference between different countries, some of countries have limited to produce grain with surplus grain and a lot of plough land leave unused, but other countries have happened famine because of lack of enough plough land. Most of countries to be short of grain are mainly in Africa such as Ethiopia, and Iraq, Philipines etc. their problems to be solved easily, they lacks the money and technology, not plough land.(to be proofread)

 
 
Copyright © 2009 - 2010 tuyelt.com All Rights Reserved.
人造土壤技术专利 发明人:李鹏飞  联系电话:13043864167
注意:本站人造土壤专利技术禁止用在违反国家法律用途,否则发明人将由法律维权!