种植黄花草木樨对盐碱地土壤水、盐状况的影响  

Influence of Planting Melilotus Offcinalia(MO) on Water and Salt in Saline-Alkali Soil

作　　者：卞建民[1] 刘彩虹[1] 杨占梅[1] 林年丰[1] 汤洁[1] 李月芬[1] 李昭阳[1] 

机构地区：[1]吉林大学环境与资源学院,长春130026

出　　处：《吉林农业大学学报》2012年第2期176-179,183,共5页Journal of Jilin Agricultural University

基　　金：国家自然科学基金项目(41072255);农业部公益性行业科研专项(200903031)

摘　　要：在吉林省大安市试验样地,采集不同地段、不同时期的盐碱土样,分别进行了土壤容重、田间持水量及全盐量等的测定,并利用试验获得的数据,分析了黄花草木樨种植前后土壤含水量、田间持水量及土壤容重等方面的变化,通过比较10月份和6月份种植区和未种植区各项指标的变化,对比了种植黄花草木樨后盐碱地土壤改良的效果。结果表明:同一季节,种植区与未种植区比较土壤容重减小、含水量及田间持水量提高,土壤的保水持水能力增强;种植区10月份较6月份全盐量和pH均值分别减少了260.61 mg/100g和0.3,有机质含量增加了0.002 8 g/kg,土壤的性质和结构得到改善;种植区10月份相对于6月份土壤全盐量、有机质含量的变化幅度明显高于未种植区,说明黄花草木樨具有明显的改良盐碱土结构的功能,这为盐碱土改良提供了一种较为有效的生物改良技术。According to the circumstances of Da′an site,series tests including soil moisture,bulk density,field moisture capacity and total salt were carried out using saline-alkali soil samples collected in the field in different regions and different times.The changes of soil bulk density,field moisture capacity,total salt and soil organic matter before and after the planting of MO were analyzed and the saline-alkali soil improving effect of the area planted with MO was compared to the uncultivated area on the basis of experimental data obtained in June and October.The results were as follows： in the same reason,the soil bulk density and field moisture capacity in planting area were higher than unplanting area,which showed that the water-holding capacity increased;in MO planting area,from June to October,the soil total salt and pH decreased by 260.61 mg/100g and 0.3 respectively,organic matter content increased by 0.002 8 g/kg,and it had a more noticeable improvement than unplanting area.All of the results indicate that MO has an apparent function on improving soil structure.It provides a more effective biological technique on improving saline-alkali soil.

关 键 词：盐碱土 黄花草木樨 土壤容重 田间持水量 土壤全盐量 

分 类 号：S156.4[农业科学—土壤学]