[1]魏彬萌,赵宣.添加砒砂岩对风沙土性质的改良及时间效应[J].水土保持研究,2017,24(06):16-21.
　WEI Binmeng,ZHAO Xuan.Effect of Addition of Feldspathic Sandstone on Improvement of Aeolian Sand Soil Quality and the Time Effect[J].Research of Soil and Water Conservation,2017,24(06):16-21.
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添加砒砂岩对风沙土性质的改良及时间效应

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 24 期数: 2017年06期 页码: 16-21 栏目: 出版日期: 2017-11-24
Title:
Effect of Addition of Feldspathic Sandstone on Improvement of Aeolian Sand Soil Quality and the Time Effect
作者:
魏彬萌, 赵宣
陕西省土地工程建设集团有限责任公司, 陕西地建土地工程技术研究院有限责任公司, 陕西省土地整治工程技术研究中心, 国土资源部退化及未利用土地整治工程重点实验室, 西安 710075
Author(s):
WEI Binmeng, ZHAO Xuan
Shaanxi Province Land Engineering Construction Group, Institute of Land Engineering and Technology, Shaanxi Provincial Land Engineering Construction Group Co., Ltd. Key Laboratory of Degraded and Unused Land Consolidation Engineering, Ministry of Land and Resources of China, Shaanxi Province Land Reclamation Engineering Technology Research Center, Xi’an 710075, China
关键词:
风沙土; 砒砂岩; 质地; 团聚体; 有机质
Keywords:
sandy soil; feldspathic sandstone; soil texture; soil aggregate; soil organic matter
分类号:
S156.5
摘要:
试验利用砒砂岩和风沙土性质上的互补性，采用田间试验，将两者按不同的比例（1：1，1：2，1：5）复配，并以黄土与风沙土1：2复配作为对照，以期为将砒砂岩与沙复配成土技术大规模推广应用于毛乌素沙地进行农业种植提供科学依据。结果表明，随着砒砂岩加入比例的增加，复配土壤砂粒含量减少，粉粒含量明显增加，砒砂岩的加入促使风沙土土壤质地由砂土向粉壤土逐渐转变。而且随着作物种植年限的增加，复配土壤砂粒含量也在明显减少，粉粒和黏粒含量增加且有逐渐下移的趋势，这种变化在0-40 cm土层尤为突出。各处理>0.25 mm水稳性团聚体含量（WR0.25），平均重量直径（MWD），几何平均直径（GMD）均随砒砂岩加入比例和作物种植年限的增加而显著增加，>0.25 mm各级别土壤团聚体含量也基本随砒砂岩加入比例和作物种植年限的增加而增加，且增加最明显的是0.25~0.5 mm级别土壤团聚体含量。各处理0-30 cm土层土壤有机质含量随作物种植年限的增加而显著增加。综上，砒砂岩与沙复配比例为1：1~1：5均可不同程度的改善土壤质地和结构，增加土壤有机质，且复配比例在1：1~1：2时效果最佳。
Abstract:
The aim of the present study was to develop scientific evidence about application of feldspathic sandstone to improve Mu Us Sandy Land for agriculture cultivation. Four treatments were feldspathic sandstone:sand=1:1, 1:2, 1:5 and loess:sand=1:2 (CK), and set up and managed with wheat maize rotation system over a 6-year study period. The results showed that sand content in the composite soil decreased with feldspathic sandstone increasing, but silt content increased, indicating that adding feldspathic sandstone promoted the transform of sand soil to loam soil. Furthermore, soil sand content decreased but silt and clay content increased significantly, and gradually move downward with the increase of planting years, in particular, this effect was the most obvious at the soil depth of 0-40 cm. The water stable aggregates >0.25 mm (WR0.25), mean weight diameter (MWD), geometric mean diameter(GMD)and the amounts of soil particles>5 mm, 2~5 mm, 1~2 mm and 0.5~1 mm in every treatment increased with duration of planting years, in which the content of 0.25~0.5 mm aggregate was the maximum. Additionally, soil organic matter also increased significantly with the increase of planting years. In summary, sand soil amended with feldspathic sandstone at the ratios of 1:1~5:1 could improve soil texture and structure and enhance soil organic matter, and the effects of ratios at 1:1~2:1 on soil improvement were the best.

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备注/Memo

收稿日期:2016-12-21;改回日期:2017-01-12。
基金项目:陕西省重点科技创新团队计划项目（2016KCT-23）
作者简介:魏彬萌(1989-),女,陕西咸阳人,硕士,研究方向:土壤改良。E-mail:weibinmeng@126.com

更新日期/Last Update: 1900-01-01