白水滩土壤盐碱化分析及改良建议

Analyses and Ameliorative Suggestion for Baishuitan Alkalization

分析了白水滩盐碱地典型地段盐碱化成因及现状,气候和地形地貌是影响区域土壤盐碱化状况的主要因素,并在分析改善各种不利因素可能性的基础上,提出分区改良意见:(1)植物修复具有降低土壤盐分的作用,为其他植物的侵入和定居提供了必要条件;(2)研究区土壤质地较轻,保肥能力差,其盐分组成主要以硫酸盐为主,基本无地表径流;(3)灌溉养殖取水的最佳区位分布于研究区的中部,地下水满足用水需求;(4)白水滩下游灌排结合,与农业措施相配套,加强改良效果。

In this paper the salination origin and situation in typical plots at Baishuitan alkaline-saline land have been analyzed. The climate and geomorphology as well as topography are the primary influent factors in the region soil alkalization situation. Then the measures are proposed based on the possibility of improving the unfavorable factors： （1） the plant repairment has the function to reduce the soil salinity, and provides the essential condition for other plants＇ invasions and setties down. （2） The soil texture in test area is light; the ability to protect fertilizer is bad, its salinity composition is mainly the sulfate. There is no surface runoff basically. （3） The best position to take the water for irrigation and cultivation distributes in the middle of research area, and the ground water meets the need of water. （4） Baishuitan downriver combines fill with row, forms a complete set with the agricultural measure, and strengthens the effect of improvement.