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| 保水剂对土壤特性长效影响的研究 | |
| 引用本文： | 马鑫,魏占民,于健,史吉刚,吴迪.保水剂对土壤特性长效影响的研究[J].灌溉排水学报,2013,32(3). |
| 作者姓名： | 马鑫 魏占民 于健 史吉刚 吴迪 |
| 作者单位： | 1. 内蒙古农业大学,呼和浩特,010018 2. 内蒙古水利科学研究院,呼和浩特,010020 3. 内蒙古呼伦贝尔水利局,内蒙古海拉尔,021000 |
| 基金项目： | 国家科技支撑计划项目，国家自然科学基金项目，水利部推广项目，内蒙古自然科学基金重点项目 |
| 摘 要： | 基于田间试验,研究了保水剂对土壤理化性质的长效性影响。结果表明,施用保水剂可明显增加土壤微团粒结构,增大土壤持水率和表层土壤pH。保水剂施用1～5年期间,表层土壤(0～10cm)中0.05～0.01mm粒径质量分数增加了0.81%～7.74%,0.01～0.005mm粒径质量分数减少;施用保水剂第3年时表层土壤0.05～0.01mm粒径质量分数提高最显著,且保水剂施用后第3年土壤的控水能力最强。施用保水剂0～10、10～20、20～40cm土层土壤持水率比对照增加6.54%、6.22%、8.50%,饱和含水率分别比对照增加了1.3%～30.7%、2.4%～28.7%和0.8%～21.7%,保水剂连续施用第3年性能最佳。 |
| 关 键 词： | 保水剂 土壤粒径 土壤持水率 土壤控水性 保水剂性能 |
The Long-term Effect of Superabsorbent Polymers on Soil Properties |
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| Abstract: | The permanent effect of superabsorbent polymers on the physical and chemical characteristics of soil was studied based on field experiments.The result showed that:the content of soil micro-aggregates increased significantly,so did the water holding capacity and pH value.During the five years when the superabsorbent polymers were applied in soil,the content of soil surface aggregates(0.05～0.01mm)increased by 0.81%～7.74% especially in the third year,while the content of aggregates(0.01～0.005mm) reduced;water holding capacity reached the maximum after superabsorbent polymers were applied for 3years;during different stages with superabsorbent polymers,soil water holding capacity of 0～10cm,10～20cm and 20～40cm in depth increased by 6.54%,6.22% and 8.50%respectively,and saturated water contents increased by 1.3%～30.7%,2.4%～28.7%,0.8%～21.7% compared with those without superabsorbent polymers.Superabsorbent polymers should be applied continuously in soil for three years. |
| Keywords: | superabsorbent polymers soil particle water content of saturated soil soil water holding capacity the performance of water retaining agent |
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