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根据干燥度、降水量、结合温度,同时辅之以地貌、作物等指标。可将我国干旱半干旱农区(不包括纯牧区)分为东北西北低高原亚半干旱温和农区,北部中高原半干旱凉温农区,西北干旱温和和灌溉绿洲农区,青藏高原旱凉农区及9个亚区。确定各地区农林牧的发展方向,应考虑农林牧各业的生物量、产品量、产值、劳动与资金占有比例、市场、贸易等多种因素。青藏高原,除青东和藏东南农区外,主要是牧业地区。干旱灌溉区,光热水条件好,潜力大,可实行以农为主、农牧结合,发展林业应考虑水分供应的限制。亚半干旱温和区,温度水分条件中等,土地较多,农林牧发展都有潜力,应以农为主,农林牧结合,实行“自给性农业,保护性林业与低商品性牧业”。半干旱凉温农区,自然条件严峻,农牧业低而不稳,今后仍应以农业为主,发展养羊业,注意保护生态环境。以上亚半干旱温和区和亚半干旱温凉区几乎包括了我国黄土高原的绝大部分,从对黄河治理和黄河中下游农业发展的影响考虑出发,这一地区在力争粮食自给的同时,大力提倡种树(乔灌木)种草则具有重要的战略意义。
According to the dryness, precipitation, temperature, supplemented by landforms, crops and other indicators. Arid and semi-arid agricultural areas (excluding pure pastoral areas) in our country can be divided into moderate and semi-arid farmland in northeastern Northwest Plateau, semi-arid and cold farmland in northern plateau, moderate arid and irrigated farmland in northwestern China, Farms and nine sub-regions. Determine the direction of the development of agriculture, forestry, animal husbandry in all regions should take into account the various sectors of agriculture, forestry, animal husbandry, biomass, product output value, labor and capital share, market, trade and other factors. The Qinghai-Tibet Plateau, except for the Qinghai-Tibet Plateau and the southeast agricultural areas, is mainly a livestock husbandry area. Arid irrigated areas, light and hot water conditions are good, the potential is great, the main implementation of agriculture, integration of agriculture and animal husbandry, the development of forestry should consider the water supply restrictions. In semi-arid and mild subtropical regions, where there is moderate temperature and moisture and more land, there is potential for development in agriculture, forestry, animal husbandry and development. Agriculture, forestry, animal husbandry and animal husbandry should be combined to implement “subsistence farming, conservation forestry and low-commodity husbandry.” Semi-arid cold temperature of agricultural areas, the harsh natural conditions, low and unstable agriculture and animal husbandry, the future should still be based agriculture, the development of sheep industry, pay attention to protecting the ecological environment. The above sub-arid and mild semi-arid and cool-temperate regions include most of the loess plateau in our country. Considering the influence of the Yellow River management and the agricultural development in the middle and lower Yellow River, this region strives for self-sufficiency in grain while vigorously Promote the planting of trees (shrubs) grass is of strategic importance.