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新疆31.1%的耕地面积受到盐碱危害,耕地盐化面积达1.229×106hm2。盐碱土种类较多,南北疆分布特征各异,区域流域特征比较明显。自滴灌技术在新疆推广应用以来,虽然减轻了传统大水漫灌导致的地下水位抬升形成的次生盐渍化,但由于目前水资源调用难度加大、农田排碱设施废弃及滴灌造成的盐分在耕层底部聚集等,使盐碱土治理面临更大的挑战。本试验立足于滴灌条件下的盐碱土治理技术,选取4种土壤改良剂进行大田试验示范,取得了较好效果。在土壤盐分含量1.5 g/kg情况下,棉花单产提高18%~34%。
31.1% of the cultivated land in Xinjiang was endangered by salt and alkali, and the salinized area of cultivated land reached 1.229 × 106hm2. There are many types of saline-alkali soil, with different distribution features in northern and southern Xinjiang, and obvious regional basin features. Since the application of self-drip irrigation technology in Xinjiang, although the secondary salinization caused by the uplift of groundwater caused by flood irrigation in large scale has been alleviated, due to the increasing difficulty of water resources transfer at present, the salinity caused by abandoned farm facilities and drip irrigation Plowing at the bottom of accumulation, so that saline-alkali soil management is facing greater challenges. Based on the technology of saline-alkali soil treatment under the condition of drip irrigation, this experiment selected four kinds of soil conditioner for field experiments and achieved good results. In the case of soil salt content of 1.5 g / kg, cotton yield increased 18% to 34%.