论文部分内容阅读
新疆是我国西北部一个内陆干旱地区,土壤盐碱化面积大,全疆荒地资源约1.5亿亩,而非盐碱化和轻度盐碱化面积只占26.6％,盐化和碱化以及轻、中、重盐土和碱土却占42.8％,而难利用或不宜利用的尚有30.6％,在已耕地中,受次生盐碱化危害的面积约占耕地面积的35.4％,其中重盐渍化面积占18％,中度盐渍化面积占33％,轻度盐渍化面积占49％。因此,在新疆发展农牧业生产都与改良和利用盐碱地有着密切关系。一、盐碱地农田排水概况由于新疆是一个“没有灌溉就没有农业”的地区,故改良盐碱土的工作是从开垦、灌溉
Xinjiang is an inland arid region in the northwestern part of our country. The area of soil salinization is large and the resources of the wasteland in the whole Xinjiang are about 150 million mu. However, the area of non-salinization and mild salinization accounts for only 26.6%, salinization and alkalization, Light, medium, heavy salt and alkaline earth accounted for 42.8%, while 30.6% were difficult to use or not suitable for use. In the cultivated land, the area affected by secondary salinization accounted for 35.4% of the total area of cultivated land, of which heavy salt The area of salinization accounted for 18%, the area of moderate salinization accounted for 33% and the area of mild salinization accounted for 49%. Therefore, the development of agriculture and animal husbandry in Xinjiang is closely related to the improvement and utilization of saline-alkali land. I. Overview of Saline-alkali Farmland Drainage Since Xinjiang is an area where there is no agriculture without irrigation, the work to improve saline-alkali soil is from reclamation and irrigation