| IMPROVEMENT OF SANDY SOIL WITH WATERCONSERVING MEMBRANE AND ITS EFFECT ON CROP GROWTH |
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| 作者姓名： | LIXiu-jun CUIXiang-hao LIQu-sheng |
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| 作者单位： | 1. Northeast Institute of Geography and Agricultural Ecology Chinese Academy of Sciences Changchun 130012 P. R. China 2. Chemistry Department Jilin University Changchun 130023 P. R. China |
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| 基金项目： | Undertheauspicesof the of Ministry of ScienceandTechnologyofChina(No.2001BA508B05) |
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| 摘 要： | 1INTRODUCTIONArid, semi-arid, and semi-humid areas abound in sandysoil, which causes water to leak into deep soil orgroundwater so that soil′s water-conserving capabilitybecomes lower and water is used with low efficiency.Water is one of the important fa…
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| 关 键 词： | 水储存膜 发芽率 农作物 沙化土壤改良 |
| 收稿时间： | 20 September 2004 |
Improvement of sandy soil with water-conserving membrane and its effect on crop growth |
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| LIXiu-jun CUIXiang-hao LIQu-sheng.IMPROVEMENT OF SANDY SOIL WITH WATERCONSERVING MEMBRANE AND ITS EFFECT ON CROP GROWTH[J].Chinese Geographical Science,2005,15(1):64-69. |
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| Authors: | Li Xiu-jun Cui Xiang-hao Li Qu-sheng |
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| Institution: | (1) Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, 130012 Changchun, P. R. China;(2) Chemistry Department, Jilin University, 130023 Changchun, P. R. China |
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| Abstract: | Water-conserving membrane is a new material of improving sandy soil. It is based on the rule that a compound with organic and inorganic components can produce colloid after its integrating with Ca2 in soil. The water-conserving membrane will obstruct capillary and increase viscidity of sandy soil, so as to decrease leakage and evaporation in sandy soil. The water-conserving membrane contains polyacrylic acid (PAA) and bentonite. When PAA concentration and pH of solution are different, water-conserving membrane can be made in different depth of soil. This experiment shows that the solution with 0.2% PAA does not harm and poison the crops, on the contrary, promotes crop germination. The solution with 0.2% or 0.4% PAA can accelerate corn growth. Accordingly, different crops need the application of the different PAA concentrations in the cultivation. Therefore, on the basis of different vadose coefficient in sandy soil, the solution with different PAA concentration can improve sandy soil and increase its water-conserving competence very well. The solution can be used to improve sandy soil and control desert enlargement in arid, semi-arid and semi-humid areas. |
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| Keywords: | water-conserving membrane water-conserving capability germination rate crops |
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