Integrated agricultural production systems for improved food Security and livelihoods in Dry Areas(2)
第十一届国际旱地发展会议——Production systems are under pressure to be efficient in order to compete in global market. Small farms cannot benefit from economies of scale such as effective mechanization. Lack of access to capital and input markets. Youngsters are increasingly looking for alternative opportunities in the cities where employment is scarce. The result is unbridled urbanization with slums and social unrest.
关键词: 粮食安全 农业综合生产系统 规模经济 第十一届国际旱地发展会议
主讲人:Professor Ali Nefzaoui
时长:0:15:39 年代:2013年
热点排行
- 1 英语学习策略(1)
- 2 《图书馆与信息服务营销》先导片
- 3 古兽重现
- 4 Excel实战技巧精粹
- 5 在路上
- 6 恐龙绝灭与生态危机(1)
- 7 生物医学图像处理——绪言(1)
- 8 28号的青春