Haven agriculture is also known as oasis irrigating agriculture. It represents the local agriculture with watering h2o resource which allocated in droughty wasteland regions. There are old ones and new ones. The old oasis generally distributeed in the stream and lake waterfront in droughty wasteland area, piedmont belt and the dew position of alluvial fan underground h2o. The new oasis farmig is the new reclamation position which opened up in the appropriate agriculture area of droughty wasteland area which is rich in resource and superior in exploitation with the social efficiency growth and h2o conservancy condition improvement. They mainly allocated in xinjiang and hexi area of Gansu area, etc. There mainoly grow the wheat, corn, cotton and a few rice, etc. Furthermore, there also afforest and bulid the non-urban settlement. It's distinct from the Gobi Desert and wasteland view all around, it looks like the green island in the wasteland, and it's also the position which the husbandry was also quite advanced and population is quite concentrate.
Irrigation agriculture represents the h2o agriculture in general. Its characteristic is to satisfy the plants' needs towards h2o through watering measures, adjust the earth heat range, moisture and ground air, nutrient so as to improve the area productivity; it's great and stable results in agriculture. Another one represents the agriculture that in the dry and semiarid with bare rain fall that rely on the watering completely. This kind of agriculture markets in our countries's flat position and hill slopes widely. With the technological growth, it also stretches to the west constantly.
The agriculture developed in the stream position area known as stream position agriculture. The position area of High Hill is quite suit for farming, since its landscape is lower than the hilly position, the heat range was quite great, frost-free season is longer than the hilly position, the rain fall conditions is quite well and stream h2o can be the watering h2o resource. Moreover, there are usually forests in the mountain ridge between the stream valleys, this made the humus in position ground quite abundant. For instance, the Yellow River Valley and Huang River Valley of Qinhai Province in China both are typical position agriculture area; they are the main agriculture position of Qinhai Province.
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