保水剂底施对沙子剖面水分和硝态氮运移的影响研究
【目的】解决沙土地区漏水漏肥的核心问题，建立保水防渗漏新技术体系，促进沙土地区农业可持续发展。【方法】基于保水剂的吸水保肥等物理化学特点，以保水剂和土壤混合物底施为技术方法，选用聚丙烯酸钠和壤土为材料，采用沙柱模拟试验，研究了不同施用厚度的保水剂-土壤混合物对剖面水分运移及硝态氮淋洗的影响。【结果】聚丙烯酸钠在壤土中的质量分数为1%时，可以对水分有效截流；混合物底施，以0.9～1.5 cm厚度为最佳；淋溶试验表明硝态氮主要集中在表层和保水剂层，占比为87.2%，有效防止了硝态氮的下移。【结论】保水剂壤土混合物底施，可以起到显著的水分养分截流作用，本试验中聚丙烯酸钠质量分数1%及1 cm厚度时，...
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| Published in | Guanʻgai paishui xuebao Vol. 38; no. 2; pp. 44 - 48 |
|---|---|
| Main Authors | , , , , , |
| Format | Journal Article |
| Language | Chinese English |
| Published |
Xinxiang City
Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
01.02.2019
扬州大学 水利与能源动力工程学院,江苏扬州,225009%中国农业科学院农业环境与可持续发展研究所,北京,100081 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1672-3317 |
| DOI | 10.13522/j.cnki.ggps.20180238 |
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| Abstract | 【目的】解决沙土地区漏水漏肥的核心问题，建立保水防渗漏新技术体系，促进沙土地区农业可持续发展。【方法】基于保水剂的吸水保肥等物理化学特点，以保水剂和土壤混合物底施为技术方法，选用聚丙烯酸钠和壤土为材料，采用沙柱模拟试验，研究了不同施用厚度的保水剂-土壤混合物对剖面水分运移及硝态氮淋洗的影响。【结果】聚丙烯酸钠在壤土中的质量分数为1%时，可以对水分有效截流；混合物底施，以0.9～1.5 cm厚度为最佳；淋溶试验表明硝态氮主要集中在表层和保水剂层，占比为87.2%，有效防止了硝态氮的下移。【结论】保水剂壤土混合物底施，可以起到显著的水分养分截流作用，本试验中聚丙烯酸钠质量分数1%及1 cm厚度时，可获得较好效果。 |
|---|---|
| AbstractList | 【目的】解决沙土地区漏水漏肥的核心问题，建立保水防渗漏新技术体系，促进沙土地区农业可持续发展。【方法】基于保水剂的吸水保肥等物理化学特点，以保水剂和土壤混合物底施为技术方法，选用聚丙烯酸钠和壤土为材料，采用沙柱模拟试验，研究了不同施用厚度的保水剂-土壤混合物对剖面水分运移及硝态氮淋洗的影响。【结果】聚丙烯酸钠在壤土中的质量分数为1%时，可以对水分有效截流；混合物底施，以0.9～1.5 cm厚度为最佳；淋溶试验表明硝态氮主要集中在表层和保水剂层，占比为87.2%，有效防止了硝态氮的下移。【结论】保水剂壤土混合物底施，可以起到显著的水分养分截流作用，本试验中聚丙烯酸钠质量分数1%及1 cm厚度时，可获得较好效果。 S482.99; [目的]解决沙土地区漏水漏肥的核心问题,建立保水防渗漏新技术体系,促进沙土地区农业可持续发展.[方法]基于保水剂的吸水保肥等物理化学特点,以保水剂和土壤混合物底施为技术方法,选用聚丙烯酸钠和壤土为材料,采用沙柱模拟试验,研究了不同施用厚度的保水剂-土壤混合物对剖面水分运移及硝态氮淋洗的影响.[结果]聚丙烯酸钠在壤土中的质量分数为1％时,可以对水分有效截流;混合物底施,以0.9～1.5 cm厚度为最佳;淋溶试验表明硝态氮主要集中在表层和保水剂层,占比为87.2％,有效防止了硝态氮的下移.[结论]保水剂壤土混合物底施,可以起到显著的水分养分截流作用,本试验中聚丙烯酸钠质量分数1％及1 cm厚度时,可获得较好效果. |
| Author | XU, Ying LV Guohua BAI Wenbo SONG Jiqing HAN Yunyun HE Jiuxing |
| AuthorAffiliation | 扬州大学 水利与能源动力工程学院,江苏扬州,225009%中国农业科学院农业环境与可持续发展研究所,北京,100081 |
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| Author_FL | XU Ying LV Guohua BAI Wenbo SONG Jiqing HAN Yunyun HE Jiuxing |
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| Copyright | Copyright Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage 2019 Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DOI | 10.13522/j.cnki.ggps.20180238 |
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| SubjectTerms | Acrylic resins Adsorptivity Leaching Loam Loam soils Nitrates Polyacrylate Polymers Retention Sandy soils Sodium Soil columns Soil improvement Soil layers Soil mixtures Soil water movement Subsoils Thickness Water Water flow |
| Title | 保水剂底施对沙子剖面水分和硝态氮运移的影响研究 |
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