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不同植被覆盖盐碱地碱化特征及养分状况

范富, 张庆国, 马玉露, 孙德智, 萨如拉, 苏雅乐其其格, 孙海岩

范富, 张庆国, 马玉露, 孙德智, 萨如拉, 苏雅乐其其格, 孙海岩. 不同植被覆盖盐碱地碱化特征及养分状况[J]. 草业科学, 2017, 11(5): 932-942. DOI: 10.11829/j.issn.1001-0629.2016-0327
引用本文: 范富, 张庆国, 马玉露, 孙德智, 萨如拉, 苏雅乐其其格, 孙海岩. 不同植被覆盖盐碱地碱化特征及养分状况[J]. 草业科学, 2017, 11(5): 932-942. DOI: 10.11829/j.issn.1001-0629.2016-0327
Fu Fan, Qing-guo Zhang, Yu-lu Ma, De-zhi Sun, Sarula, Suyaleqiqige, Hai-yan Sun. Alkalization characteristics and cutrient status of different vegetation[J]. Pratacultural Science, 2017, 11(5): 932-942. DOI: 10.11829/j.issn.1001-0629.2016-0327
Citation: Fu Fan, Qing-guo Zhang, Yu-lu Ma, De-zhi Sun, Sarula, Suyaleqiqige, Hai-yan Sun. Alkalization characteristics and cutrient status of different vegetation[J]. Pratacultural Science, 2017, 11(5): 932-942. DOI: 10.11829/j.issn.1001-0629.2016-0327

不同植被覆盖盐碱地碱化特征及养分状况

基金项目: 

内蒙古自然科学基金项目(2013MS0605)

内蒙古自治区科技创新引导项目

内蒙古民族大学重点项目(NMDGP1410)

摘要: 为进行区域耕地保护和质量提升,增加耕地数量,合理开发利用长期处于荒废状态的盐碱地势在必行。本研究采用常规经典的测试方法,对西辽河流域8种植被覆盖盐碱地土壤0-5、5-15、15-30和30-50 cm剖面层的土壤有机质、速效养分、碱化特征及离子组成进行了分析。结果表明,不同植被覆盖盐碱地养分含量均不同,玉米(Zea mays)地、羊草(Leymus chinensis)+狗尾草(Setaria viridis)草地的有机质、速效养分含量较高;虎尾草(Chloris virgata)草地、裸地、碱蓬(Suaeda glauca)地的养分含量相近且极显著低于玉米地和羊草+狗尾草草地的养分含量(P<0.01)。各生态景观的碱化特征在4个剖面层间均差异极显著(P<0.01),羊草+狗尾草的pH、碱化度(ESP)和含盐量在4个剖面层中均低于其它生态景观的;裸地、碱蓬地、芦苇地(Phragmites australis)和芦苇苔草(Carex dariuscula)草地在4个剖面层的pH、ESP和含盐量均较高;碱蓬地与裸地在0-5 cm剖面层的Na+、CO32-、HCO3-含量较高,玉米地、羊草+狗尾草的CO32-和HCO3-较低。各植被覆盖地间的离子组成基本呈极显著性差异(P<0.01)。由于盐碱化土壤退化到一定程度会变成裸地,不利于改良利用,因此,本研究通过比较不同植被覆盖盐碱地4个剖面层的养分状况和碱化特征,认为羊草+狗尾草覆盖有利于盐碱化土壤的改良。

 

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  • 收稿日期:  2016-06-16
  • 修回日期:  2017-01-02
  • 发布日期:  2017-05-19

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