冀东平原保护地土壤酸化及次生盐渍化的现状与防治措施

The Current Situation and Control Measures on Acidification and Secondary Salinization of Protected Soil in Jidong Plain

土壤次生盐渍化和酸化是我国保护地栽培生产中的一个重要限制因子。通过对冀东平原保护地土壤次生盐渍化及酸化演变过程进行初步研究,论述了保护地土壤次生盐渍化及酸化的成因,指出土壤环境封闭、大量盲目施肥、不合理灌溉是导致保护地土壤次生盐渍化及酸化的主要原因。提出通过测土配方施肥、增施有机肥、合理灌溉和改良土壤等措施,可以使保护地水肥资源相协调。调节土壤生态环境是防止次生盐渍化和酸化的有效途径。

Soil secondary salinization and acidification is an important limiting factor for protecting cultivation in China.The causes of the protected soil secondary salinization and acidification were discussed based on the preliminary study on the evolution process of the protected soil secondary salinization and acidification.This paper pointed out that closed soil environment,large blind irrational fertilization and unreasonable irrigation were main reasons to cause secondary salinization and acidification in protected soil.It indicated that soil testing and formulated fertilization,increased application of organic fertilizer,reasonable irrigation and improving soil conditions could integrate the water with fertilizer resources.So regulating soil eco-environment is the effective way to prevent secondary salinization and acidification.