| 聚丙烯酰胺对砂土保水性的影响 |
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| 引用本文： | 闫功双,夏海江,杜尧东,孟维忠,李勇,杨光杰.聚丙烯酰胺对砂土保水性的影响[J].河南农业大学学报,2001,35(1):47-49. |
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| 作者姓名： | 闫功双 夏海江 杜尧东 孟维忠 李勇 杨光杰 |
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| 作者单位： | 1. 辽宁省水利水电科学研究院,
2. 中国科学院沈阳应用生态研究所, |
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| 基金项目： | 辽宁省重点科技攻关项目! (95 1380 0 2 ) |
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| 摘 要： | 试验结果表明，施用聚丙烯酰胺可以加速土壤水分入渗，减少渗出量，抑制土壤水分蒸发，从而增强土壤的持水能力，6kg土壤施用0．2－0．5g聚丙烯酰胺，土壤水分入渗时间为对照的2．1％－6．1％，土壤水分渗出量为对照的3．2％－48．5％；土壤水分含量比对照高2％，并可以降低土壤容重，形成良好的蔬松结构。
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| 关 键 词： | 聚丙烯酰胺 砂土 保水性 土壤结构改良剂 水土保持 |
| 文章编号： | 1000-2340(2001)01-0047-03 |
Effect of polyacrylamide on water-retaining characteristics of sandy soil |
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| YAN Gong-shuang,XIA Hai-jiang,DU Yao-dong,MENG Wei-zhong,LI Yong,YANG Guang-jie.Effect of polyacrylamide on water-retaining characteristics of sandy soil[J].Journal of Henan Agricultural University,2001,35(1):47-49. |
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| Authors: | YAN Gong-shuang XIA Hai-jiang DU Yao-dong MENG Wei-zhong LI Yong YANG Guang-jie |
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| Abstract: | Studies were conducted on the effect of polyacrylamide on water-retaining characteristics of sandy soil.The results showed that applying polyacrylamide to sand could increase soil water infiltration speed,reduce soil water seepage and evaporation,and thus improve the soil water-retaining characteristics.Applying 0.2～0．5 g polyacrylamide to 6 kg soil,the water infiltration time was 2.1～6．1 per cent of the control,soil water seepage was 3.2%～48．5％ of the control,soil water content was 2 percent higher than that of the control. Aapplying polyacrylamide to sandy soil could also alleviate increment of soil bulk density and maintain better soil structure. |
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| Keywords: | polyacrylamide sandy soil water retaining characteristic |
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