一、旱地农业(Dryland agriculture) 旱地农业是在半干旱和半湿润偏旱地区,在没有灌溉条件的耕地上所从事的农牧业生产。它包括农作物种植业、草业等。为了建立良性的旱地农业生态经济体系,农作物的生产除必须与畜牧业的发展相结合外,有时还必须与保护性的林业密 I. Dryland agriculture Dryland agriculture is agriculture and animal husbandry that is practiced on arable land that is not irrigated in semi-arid and semi-humid drylands. It includes crop cultivation, grass industry and so on. In order to establish a benign dry land eco-economic system in agriculture, in addition to the production of crops must be integrated with the development of animal husbandry, and sometimes must also be protected with the protection of forestry