煤矸石山覆盖种植对植物根系的影响

通过对阳泉矿务局9＃煤矸山种植的植物根系调查,其植物根系主要分布于覆盖层中,薄层覆盖与裸露矸石上种植的植物根系生长较深。矸石风化物中的含水量随深度增加而增多,采取“薄层覆盖复垦”有利于植物生长。

THE INFLUENCE OF THE COVERED PLANTING ON PLANT ROOTS AND RECLAMATION MEASURES ON COAL GOB MOUNTAINS

It is proved by the investigation of plant roots and measurement of water conditions and biological output in the small trial district on the ninth coal gob mountains in Yongquan city of Shanxi province.Plant roots mainly grow in the covered layer on the district covered by thick loess and coal ash, and the roots of leguminous herbage become abnormal in shape.Herbage takes root more deeply on the thin - covered and uncovered district.In dry season, the water content in the test area increases as the depth adds, so it is difficult for the plants on the area covered thickly to utilize the water in gobs under the cover and shows serious drought sign.Therefore, the feasibli-ties of "the thin - covered reclamation",one of the cheap,practical,new technologies ,is testified scientifically.