【摘要】 煤矸石因其含有腐植酸、有机质和微生物等对土壤具有改良作用的成分，可作为土壤改良剂或有机肥料的原料，有效提升土壤肥力、改善团粒结构并促进作物生长。为了探讨煤矸石用于沙土地改良的可行性，采用盆栽实验，研究煤矸石改良剂对陕北沙土性质及小麦生长的影响。研究结果表明，投加煤矸石改良剂提高了土壤氮、磷及有机质的含量，且其促进作用与投入量、改良剂组分中秸秆的占比呈正相关；煤矸石改良剂有利于小麦的生长，其植株株高有不同程度的增长；随着改良剂投加量的增加，小麦叶片过氧化物酶活性、叶绿素含量有增加趋势，丙二醛含量则反之。综合而言，煤矸石改良剂可有效改良陕北沙土土壤，所选用的煤矸石改良剂中，从煤矸石综合利用量方面考虑，对陕北沙土建议施用30%的土壤改良剂(煤矸石占比为80%)。更多还原

【Abstract】 Coal gangue containing components such as humic acid, organic matter, and microorganisms, can be utilized as a soil amendment or raw material for organic fertilizers. These components effectively enhances soil fertility, improves soil aggregate structure, and promotes crop growth. In order to explore the feasibility of using coal gangue to improve sandy soil in northern Shaanxi, pot experiments were conducted in this paper to study the effects of coal gangue amendment on sandy soil properties and wheat growth. The results showed that adding coal gangue amendment increased the contents of nitrogen, phosphorus and organic matter in soil, and its promotion was positively correlated with the amount of improver and the proportion of straw in amendment components; coal gangue amendment is beneficial to the growth of wheat, and its plant height increases in different degrees; the peroxidase activity and chlorophyll content of wheat leaves increased with the increase of amendment dosage, but the malondialdehyde content was opposite. In conclusion, coal gangue amendment effectively improves Northern Shaanxi sandy soil. In the selected coal gangue amendment, considering the comprehensive utilization of coal gangue, it is suggested to apply 30% coal gangue amendment(the proportion of coal gangue is 80%) to sandy soil in northern Shaanxi.更多还原