定边县盐碱土改良路径探讨

Discussion on Improvement Ways of Saline Alkaline Soil in Dingbian County

土壤盐碱化是制约我国陕北地区土地利用效率和经济发展的重要阻碍因素之一,定边县盐碱化表现为分布范围广、盐碱化程度高、种类复杂多样但分布相对分散的特点,随着盐碱化土壤面积的不断扩大,对定边县土地综合利用和粮食产能的提高造成巨大影响。以防治土地盐碱化为核心,从现有盐碱土耕地适宜性分析出发,提出了采取地表积盐层盐壳剥离、土壤质地改良、土壤断面改良、土壤化学改良以及生土快速熟化及土壤肥力提升等措施综合治理盐碱土,为治理土壤盐碱化积累经验。

Soil salinization is one of the important obstacles restricting land use efficiency and economic development in northern Shaanxi.Salinization in Dingbian County is characterized by wide distribution,high salinization,complex and diverse types,but relatively scattered distribution.With the continuous expansion of the area of saline-alkali soil,it has a huge impact on the comprehensive utilization of land and the increase in grain production capacity in Dingbian County.This paper focuses on the prevention and control of land salinization.Starting from the analysis of the suitability of the existing saline-alkali soil arable land,the stripping of the salt crust of the surface salt layer,soil texture improvement,soil section improvement,soil chemical improvement,and rapid maturation of raw soil,soil fertility improvement and comprehensive treatment of saline-alkali soil are adopted,which accumulates experience for the treatment of soil salinization.