| 苏打盐碱土结构性与持水特性的改良研究 |
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| 引用本文： | 王宇,韩兴,赵兰坡,马晶.苏打盐碱土结构性与持水特性的改良研究[J].吉林农业大学学报,2006,28(5):545-548. |
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| 作者姓名： | 王宇 韩兴 赵兰坡 马晶 |
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| 作者单位： | 吉林农业大学资源与环境学院,长春,130118;南京农业大学资源与环境科学学院,南京,210095 |
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| 基金项目： | 吉林省重点科技招标项目(980201-04) |
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| 摘 要： | 采用硫酸铝对吉林省西部苏打盐碱土进行了改良,对改良后土壤的结构性及持水特性进行了测定。结果表明,施用硫酸铝后苏打盐碱土的土壤结构性与持水特性均有显著改善,土壤团聚体(>0.005 mm)的数量显著增加。当硫酸铝用量达0.4%(质量分数)时,土壤容重由1.35 g/cm3降至1.16 g/cm3,孔隙度由49.1%增至56.2%。随着硫酸铝用量的增加,膨胀度增大,土壤渗透性和持水能力增强。
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| 关 键 词： | 苏打盐碱土 硫酸铝 结构性 持水特性 |
| 文章编号： | 1000-5684（2006）05-0545-04 |
| 收稿时间： | 2006-01-16 |
| 修稿时间： | 2006-01-162006-04-19 |
Study on Improving Structure and Water Holding Characteristics of Soda Alkali-saline Soil |
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| WANG Yu,HAN Xing,ZHAO lan-po,MA Jing.Study on Improving Structure and Water Holding Characteristics of Soda Alkali-saline Soil[J].Journal of Jilin Agricultural University,2006,28(5):545-548. |
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| Authors: | WANG Yu HAN Xing ZHAO lan-po MA Jing |
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| Institution: | 1. College of Resources and Environment, Jilin Agricultural University, Changchun 130118, China ; 2. College of Resources and Environment Science, Nanjing Agricultural University, Nanjing 210095, China |
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| Abstract: | This article emphatically discussed the improvement effect of aluminum sulfate on bad physical characteristics of soda alkali-saline soil.The result indicated that after the employment of aluminum sulfate,soil structure and water holding characteristics of soda alkali-saline soil remarkably improved and soil aggregate(>0.005 mm) remarkabld increasd.When addition of aluminum sulfate reached 0.4%,bulk specific gravity varied from 1.35 g/cm~3 to 1.16 g/cm~3, porosity from 49.1% to 56.2%.With the increase of aluminum sulfate addition,degree of expansion increased,soil infiltration ability and water holding ability strengthened,which has created excellent soil environments for crop growth. |
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| Keywords: | soda alkali-saline soil aluminum sulfate structure characteristic water holding characteristic |
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