ISWC OpenIR  > 水保所知识产出(1956---)
不同豆科植物对黄土高原弃土场的改良效果
袁雪红1,2; 高照良1,3; 张翔4; 杜捷3; 白皓3
2016
Source Publication中国水土保持科学
Volume14Issue:4Pages:121-127
Abstract

为了探究豆科植物种植初期对黄土高原地区弃土场的改良效果,本文采用野外模拟弃土场和实验室测定相
结合的方法,在弃土场上种植柠条、白三叶、红豆草、草木樨和紫花苜蓿5 种豆科植物,研究1 年后弃土场土壤的水
分和养分状况。结果表明: 各小区种植植物1 年后,土壤水分状况有了明显的改善; 土壤养分硝态氮质量分数增
加,有机质、速效钾的质量分数除了草木樨有所增加以外,其他均减少,速效磷的质量分数均减少,土壤中的速效钾
由于植物生长消耗而减少,但其质量分数丰富,足以满足植物生长的需要; 土壤中的铵态氮和硝态氮质量分数表现
为表聚作用,且硝态氮的质量分数均大于铵态氮; 植被对土壤的改良程度依次为白三叶> 柠条> 红豆草> 紫花苜
蓿> 草木樨。因此,种植豆科植物可以有效的改善土壤的水分和氮素营养,为今后弃土场土壤改良提供一定的理
论参考。

Other Abstract

[Background] The construction activities in recent decades have caused serious soil and
water loss,thus ecological restoration and soil and water conservation of spoil ground are the key projects
of environmental protection in construction. The objective of this study is to grasp the improvement effects
of 5 legumes ( Caragana korshinskii Kom,Trifolium repens L. ,Onobrychis viciaefolia Scop,Melilotus
suaveolens Ledeb. ,and Medicago sativa L. ) at the early stage on the spoil ground in Loess Plateau
region of China. [Methods] Based on field simulation and laboratory analysis,we surveyed soil
moisture,nutrient contents and analyzed the correlation among different plant nutrition elements,as well
as the improved effects of different plants. [Results] 1 ) Moisture content of the 0 - 160 cm layer
increased with increasing soil depth,the average moisture content of C. korshinskii Kom,T. repens L. ,O. viciaefolia Scop,M. suaveolens Ledeb. ,M. sativa L. and control was 17. 69%,15. 98%,
17. 56%,18. 35%,17. 95% and 14. 44%,respectively. In the 0 - 30 cm soil layer,the average
moisture content of these plants increased by 77. 67%,and in the 30 - 160 cm soil layer increased by
12. 78% compared with the control. 2) The mass fraction of nitrate nitrogen of the 5 plants increased
compared with the control in the 0 - 20 cm soil layer,both ammonium nitrogen and nitrate nitrogen in 0 -
10 cm layer were higher than that of layer 10 - 20 cm. And for each plant,the mass fraction of nitrate
nitrogen was higher than ammonium nitrogen. In the 0 - 20 cm soil layer,the average mass fraction of
available phosphorus under the 5 leguminous plants,ranging from 4. 29 - 6. 26 mg /kg,was lower than
the control group with 9. 01 mg /kg. In the 0 - 20 cm soil layer the average mass fraction of available K
was in the range of 130. 82 - 153. 26 mg /kg,the mass fraction of available potassium reached three levels
in the second soil survey. 3) The results of principal component analysis showed that the comprehensive
effect of 5 legumes on improvements of soil varied,with the order of T. repens L. > C. korshinskii Kom >
O. viciaefolia Scop > M. sativa L. > M. suaveolens Ledeb. [Conclusions] This study found that
planting leguminous plants on the abandoned soil field modified the nutrition condition of soil by
improving the soil moisture and the mass fraction of nitrate nitrogen. The improved effect of the surface
soil moisture content was better than that of deep soil. Planting M. suaveolens Ledeb. increased the soil
organic mass ( SOM) and available K mass fraction,reduced the mass fraction of ammonium nitrogen and
available phosphorus. Other plants showed the consumption of SOM,available phosphorus,and available
potassium. By planting legume on the spoil ground,the accumulation of nitrogen surface increased,and
soil available potassium content was rich enough to meet the need of plant growth. The result of the
comprehensive analysis revealed that the effect of T. repens L. on soil amelioration was the best among
the 5 plants.

Keyword弃土场 豆科植物 土壤改良 土壤水分 土壤养分
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8532
Collection水保所知识产出(1956---)
Affiliation1.中国科学院水利部水土保持研究所
2.中国科学院大学
3.西北农林科技大学水土保持研究所
4.西北农林科技大学水利与建筑工程学院
First Author Affilication中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
袁雪红,高照良,张翔,等. 不同豆科植物对黄土高原弃土场的改良效果[J]. 中国水土保持科学,2016,14(4):121-127.
APA 袁雪红,高照良,张翔,杜捷,&白皓.(2016).不同豆科植物对黄土高原弃土场的改良效果.中国水土保持科学,14(4),121-127.
MLA 袁雪红,et al."不同豆科植物对黄土高原弃土场的改良效果".中国水土保持科学 14.4(2016):121-127.
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