Soil Nutrition in Rhizosphere of Four Desert Rare Shrub Species in Western Ordos

ZHANG Ying-juan; HE Yin-yue; WANG Si-qin-hua

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Soil Nutrition in Rhizosphere of Four Desert Rare Shrub Species in Western Ordos

- Soil Nutrition in Rhizosphere of Four Desert Rare Shrub Species in Western Ordos
- Bulletin of Soiland Water Conservation Vol. 31, Issue 2, Pages: 52-55(2012)
- 作者机构：
  
  内蒙古师范大学生命科学与技术学院,内蒙古,呼和浩特,010022
- 作者简介：
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- Published：2012
- 稿件说明：
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ZHANG Ying-juan, HE Yin-yue, WANG Si-qin-hua. Soil Nutrition in Rhizosphere of Four Desert Rare Shrub Species in Western Ordos[J]. Bulletin of Soiland Water Conservation, 2012, 31(2): 52-55.
DOI：

ZHANG Ying-juan, HE Yin-yue, WANG Si-qin-hua. Soil Nutrition in Rhizosphere of Four Desert Rare Shrub Species in Western Ordos[J]. Bulletin of Soiland Water Conservation, 2012, 31(2): 52-55. DOI：

摘要

选取西鄂尔多斯荒漠的沙冬青、四合木、半日花和长叶红砂这4种珍稀超旱生灌木，研究了其根际与非根际土壤有机质、全氮、全磷的含量特征及土壤pH值的变化。结果表明，相对于非根际土壤，根际土壤有机质、全氮、全磷平均提高了26.8％，19.2％和13.9％，土壤pH值平均降低了0.23个单位。除半日花外，其它3种灌木根际与非根际的土壤养分均呈现出显著差异，并表现出明显的正根际效应(根际土壤／非根际土壤＞1)。4种荒漠灌木的根际对土壤养分均具有富集效应，根际土壤养分的富集有利于荒漠土壤环境的改善和恢复。

Abstract

Four rare shrubs found in west Ordos，including Ammopitanthus mongolicus，Tetraena mongolica，Helianthemum songoricum，and Reaumuria trigyna，were selected to study the variations of organic matter content，total N，total P and soil pH in soils of the rhizosphere and surrounding matrices． The results show that the contents of organic matter，total N，and total P of the soils in the rhizosphere were 26． 8%，19． 2%，and 13． 9%，respectively，higher than those in the surrounding matrices，while the soil pH value was 0． 23 unit lower than the average． Except for H．songoricum，soil nutrition in the rhizosphere differed significantly from that in the surrounding matrices，showing that the three shrubs have positive rhizosphere effects on soil nutrients． The rhizosphere of the four shrubs showed positive effects on nutrient enrichment，providing potential benefits to improve and restore the desert soil environment．

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