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煤矸石复垦中的氮素积累途径 被引量:8

THE APPROACHES OF NITROGEN ACCUMULATION IN RECLAMATION ON COAL GANGUE
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摘要 进行了煤矸石上种植接菌牧草及加覆盖物种植牧草的盆栽和小区试验 .结果表明 ,接菌种植可以显著提高植物的固氮酶活性和结瘤率、改善煤矸石的氮素贫瘠状况 ,促进牧草根系和地上部分的生长和煤矸石的进一步风化 ;这些结果在施氮量中等区w (N) =15 g/10 0kg更为明显 .同时在煤矸石上加薄层覆盖物种植豆科植物 ,对其氮素的积累提高和生物性状的改善同样具有明显的促进作用 ,并以黄土覆盖效果更佳 .这些结果为解决煤矸石复垦中氮素缺乏的问题提供了有效途径 .表 3参 The approaches of nitrogen accumulation were studied in pots and plots planted with inoculated forage grasses on coal gangue and on covered coal gangue. The results showed that using inoculated plantation, the activity of N-fixing enzyme and the rate of forming root nodules greatly increased, which improved N content, promoted the growth of grazing and accelerated the efflorescence of coal gangue. This effect was more significant in the treatment of the moderate application of nitrogen 〔w(N)=15 g/100 kg coal gangue〕. By planting Legume on the thin covered gangue, especially on the loess covered coal gangue, nitrogen accumulation also increased with the improvement of the biologic characteristics. These two approaches were effective for solving the shortage of nitrogen in planting on coal gangue. Tab 3, Ref 4
出处 《应用与环境生物学报》 CAS CSCD 2002年第2期215-218,共4页 Chinese Journal of Applied and Environmental Biology
基金 山西省留学基金资助项目~~
关键词 煤矸石 接种根瘤菌 复垦 氮素积累 coal gangue inoculated root nodule reclamation nitrogen accumulation
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  • 1谢英荷,张淑香,洪坚平,金志南,赵景逵,李青萍.煤矸石风化物上不同复垦措施对土壤微生物的影响[J].土壤通报,1995,26(4):183-185. 被引量:3
  • 2洪坚平,山西农业大学学报,1993年,13卷,2期,117页
  • 3金志南,山西农业大学学报,1991年,11卷,3期,201页
  • 4田海滨,自然资源,1993年,1期,23页
  • 5金志南,山西农业大学学报,1991年,11卷,3期,201页
  • 6谢英荷,两高一优农业与土壤科学,1994年,212页
  • 7洪坚平,山西农业大学学报,1993年,13卷,2期,117页

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