Integrated agricultural production systems for improved food Security and livelihoods in Dry Areas（2）
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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.
ゲスト ：
Professor Ali Nefzaoui
キーワード ：
粮食安全 农业综合生产系统 规模经济視頻年代：2013
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