松嫩平原西部土壤次生盐渍化防治技术研究

Techniques of Controlling Secondary Soil Salinization in the West of Songnen Plain

根据多年的野外定位观测和试验研究 ,提出松嫩平原西部土壤次生盐渍化防治应综合考虑灌溉淋洗、潜水位、时间及土壤化学改良 4个要素 ;研究了西部盐碱地治理过程中土壤剖面盐分特征变化及对周边土壤环境特征的影响 ,认为单一的水利用措施不能从根本上解决西部土壤次生渍化的问题 ;通过不同用水条件下耕层土壤盐分变化及土壤改良剂综合配套试验研究等 ,提出本区土壤次生盐渍化防治的技术措施。

The controlling of secondary soil salinization may take into account four main complex factors: leaching, groundwater table, time and modifier in the west of Songnen Plain. The change of salinity characteristic is analysed for soil profile during comprehensive harnessing and its effects on the characteristic of circumjacent soil are also studied. And through experiment, the paper studies the effects of different water-applying regimes on the changes of soil salinity in plowed layer. Based on a series of comprehensive experiments of applying soil amendment, the comprehensive technology system for preventation and treatment of soil secondary salinization in this region is established.