棉花滴灌田间盐分变化规律的初步研究

Preliminary Research on the Change Rule of Cotton Field Salinityunder Drip Irrigation

以田间实验为基础对棉花滴灌土壤盐分的变化规律进行了分析研究。结果表明 :滴灌为浅灌且可控性强 ,不会产生深层渗漏 ,土壤含盐量在整个滴灌期较低。盐分在空间的分布主要受蒸发和湿润区范围的影响 ,灌水量的增加有助于土壤脱盐。这些结果对在生产实践中控制滴灌水量和治理盐碱具有指导意义。

Based on field experiment, the change rule of cotton field salinity under drip irrigation are studied in this paper. The research result indicates that drip irrigation is shallow irrigation. It has high controllability and will not bring seepage. Field salinity is low during the whole drip irrigation period. The salinity distribution is mainly influenced by evaporation and wetness area. The increase of irrigation water is helpful to remove salt. All the results have reference value for controlling drip irrigation water and preventing salt.