芦苇秸秆还田对盐碱地的改良研究
Study on the Improvement of Saline-Alkali Land by Reed Straw Returning

DOI: 10.12677/HJAS.2020.1011134, PP. 877-881

Keywords: 盐碱地，芦苇，离子浓度，土地工程
Saline-Alkali Land, Reed, Ion Concentration, Land Engineering

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Abstract:

土壤盐碱化作为一种土壤障碍现象，对土壤理化性质、生产力和生态环境均产生了一定的破坏。为了改良土壤盐渍化现场，以芦苇秸秆还田作为技术措施共设置三组试验，分别为不还田(CK)、秸秆粉碎还田(T1)、秸秆直接还田(T2)，同时对土壤的pH、电导率、Ca²⁺、Mg²⁺、Na⁺和K+进行测定。结果表明，与CK处理相比，T1和T2处理分别使土壤pH降低了5.40%和0.99%，T1和T2处理使土壤电导率分别降低了3.79%和增加了6.40%。T1和T2处理的Ca²⁺浓度较CK分别增加了6.74%和降低了1.23%。与CK相比，Mg²⁺、Na⁺和K⁺的浓度分别增加了0.26%~6.20%、50.00%~55.00%和50.00%~150.00%，处理间无显著差异。可见，芦苇秸秆还田的措施对盐碱地的土壤改良有一定的效果。
As a kind of soil obstacle phenomenon, soil salinization has caused certain damage to soil physical and chemical properties, productivity and ecological environment. In order to improve the soil salinization site, a total of three sets of experiments were set up with the reed straw returning to the field as a technical measure, namely no returning to the field (CK), straw crushing and returning to the field (T1), and direct straw returning to the field (T2). At the same time, the soil pH, conductivity, Ca²⁺, Mg²⁺, Na⁺ and K+ were measured. The results showed that compared with CK treatment, T1 and T2 treatments reduced soil pH by 5.40% and 0.99%, respectively, and T1 and T2 treatments reduced soil conductivity by 3.79% and increased by 6.40%, respectively. Compared with CK, the Ca²⁺ concentration of T1 and T2 treatments increased by 6.74% and decreased by 1.23%, respectively. Compared with CK, the concentrations of Mg²⁺, Na⁺ and K⁺ increased by 0.26% - 6.20%, 50.00% - 55.00% and 50.00% - 150.00%, respectively, and there was no significant difference between treatments. It can be seen that the measures of returning reed straw to the field have a certain effect on the improvement of saline-alkali soil.

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