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菌剂与肥料配施对露天矿排土场苜蓿生长及土壤养分含量的影响

DOI: 10.7668/hbnxb.2014.04.033, PP. 186-191

Keywords: 丛枝菌根真菌,有机肥,无机肥,排土场土壤,紫花苜蓿

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Abstract:

为解决露天煤矿排土场复垦土壤植被恢复困难的问题,探索有效地改良土壤的措施,采用盆栽试验方法测定排土场土壤中菌剂与肥料配施对紫花苜蓿的生长发育的影响,进而探讨菌根剂与肥料的配施对矿区土壤的改良作用。结果表明:菌根剂与肥料配合施用能显著提高紫花苜蓿的株高、生物量、叶绿素、蛋白质、可溶性糖的含量以及抗氧化酶同工酶活性等,土壤中速效磷、速效氮、有机质、全氮、全磷含量以及土壤微生物数量也都有明显提高。其中尤以有机肥+无机肥+菌剂配施效果最为显著,与对照相比,株高、鲜质量、干质量分别增加47%,277%,280%,叶绿素、蛋白质、可溶性糖含量分别增加36%,183%,59%,过氧化氢酶、过氧化物酶、超氧化物歧化酶活性分别增加281%,1250%,15%,土壤速效N、速效P含量分别增加130%,217%,有机质含量增加76%,全N、全P含量分别增加102%,160%,土壤细菌、放线菌、真菌数量分别增加103%,68%,20%。总之,有机肥+无机肥+菌剂配施显著促进了紫花苜蓿的生长,提高了排土场土壤的养分含量,是矿区复垦土壤植被恢复中比较好的组合方式。

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