Effects of Alfalfa Covering on Plant Growth and Soil Chemical and Biological  Properties Amelioration in Coal Mining-induced Subsidence Area(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effects of Alfalfa Covering on Plant Growth and Soil Chemical and Biological  Properties Amelioration in Coal Mining-induced Subsidence Area

Author(s):: WANG Zhigang1; BI Yinli1; He Ruimin2; LIU Wenwen1; QIU Lang1; SHEN Zhen1; (1.State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology (Beijing),Beijing 100083；2.Shendong Coal Technology Research Institute in China Shenhua Group,Yulin,Shaanxi 719315)

Keywords:: coal mining-induced subsidence area; alfalfa covering treatment; reclamation species; soil chemical properties; soil enzymatic activities

Abstract:: To investigate the effects of alfalfa covering on wild cherry,shiny leaf yellowh orn,Cerasus humilis,wild apricot of four species growth,major chemical properties and enzymatic activities in the degenerated sandy soil,a field experiment in Shendong coal mining-induced subsidence area were carried out.The results showed that the four species shoot dry weight were improved significantly averaged by 31.7%-54.6%,and root dry weight by 25.6%-41.0%.Similarly,alfalfa covering treatment improved plants survivals and leaf SPAD were increased up to 85% and 32.0,respectively.Compared with the controls,soil available N,organic matter,Olsen P,available K were enhanced by 12.5%-17.9%,14.0%-17.8%,14.0%-23.2%,13.6%-28.4%,respectively.Meanwhile,soil acid phopshatase,sucrase,urease and nitratase activities in alfalfa covering were significantly higher by 36.4%-41.6%,21.8%-51.2%,33.6%-44.7%,and 20.5%-39.9% than those corresponding non-covering treatments.Therefore,alfalfa covering dramatically enhanced land restoration conditions via improving plant growths and major chemical or biological properties of soil,which provided some suggestions for long-term ecological improvements by alfalfa covering technology.

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Last Update: 2017-04-19