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《ARID LAND GEOGRAPHY》 2000-02
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THE PROPOSAL ON CONTROL OF SOIL SALINIZING AND AGRICULTURAL SUSTAINING DEVELOPMENTN IN 21'S CENTURY IN XINJIAN

TIAN Chang yan ZHOU Hong fei (Xinjiang Institute of Ecology and Geography, CAS Urumqi 830011)  
This paper clarifies the geology, the landforms, climate conditions of Xinjiang's soil salinizing and the status of salinized soil, expounds the existence of the problem of soil salinizing, and proposes that the oasis stability is affected by transitional zone outside and the soil salinization inside. In existing cultivated land, the area of 31.1% gets salt soda harm, in which strongly saline land take the 18% of saline alkali land, medium saline land take 33%, light saline land take 49%. 80% of salinity land belonged to the secondary saline land. Furthermore, the paper simplifies the development process of the salinized soil research and improvement in Xinjiang and the overseas, analyzes the salinizing question of research, improvement and usage. The main problems are: 1) saline soil gained from leaching and its secondary salinization under irrigation; 2) sodic harm; 3) impervious layer; 4) salinization of irrigating water; 5) enough of water resource accompany ample irrigation in the upper course, and shortage of water accompany irrigation with saline water in the lower course; 6) the application of new agricultural technology alleviates the harm of soil salt temporarily, but increase the regional centralized latent crisis that would happen suddenly; 7) lack of the research of salt resistance plant, etc. And finally proposes the suggestions of the following research: (1) finding the system of region water salt monitoring; (2) forming the information system and predicting of the secondary salinizing technically; (3) breeding of resistance gene project and the exploiting and studying of the salt resistant plant; (4) studying of the region water salt balance and the rule of water salt movement; (5) controlling of the region water salt technically.
【Fund】: 国家 973项目 !(编号 :G19990 43 5 0 3 )
【CateGory Index】: S156.4
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