摘要
[目的]研究粉煤灰复垦地最佳的复垦模式,以及土壤养分含量及其与土壤理化性质的响应关系。[方法]以淮南市上窑灰场土地复垦地为研究区域,选取同一地块不同覆土水平的区域做对比研究,以土壤的容重、pH、含水率、有机质、总氮、有效磷和有效钾以及不同覆土厚度下的小麦生物量为研究指标,研究粉煤灰场复垦土壤养分含量及其与理化性质的响应。[结果]粉煤灰复垦地,有效磷和含水率、总氮和pH、有机质和有效钾具有良好的线性相关响应;当土壤覆土厚度小于38 cm时,粉煤灰可以对复垦地的营养状况具有良好的改善,使小麦具有较高的产量,当覆土厚度大于70 cm时,不利于粉煤灰层对覆土层的改善,影响小麦产量。[结论]该研究为复垦工作和农业种植提供指导和参考。
[Objective] The research aimed to study the best reclamation model in reclaimed field of fly ash disposal site and the response of soil nutrient content and its physical-chemical properties in fly ash disposal sites.[Method]One soil reclamation field in Shangyao fly ash disposal site from Huainan City was chose as research area, comparing areas in the same site which have different overburden soil thickness level, using soil bulk density, pH, water content, organic matter content, total nitrogen, available phosphorus and available potassium as research parameters and the influence of reclaimed soil thickness to the biomass of wheat, to study the response of reclaimed soil nutrient content and its physical-chemical properties in fly ash disposal site.[Result]The soil water content and its available phosphorus, the soil pH value and its total nitrogen, the soil organic matter content and its available potassium had good linear dependence;when the reclaimed soil thickness less than 38 cm, the fly ash can have good improvement for reclaimed soil nutrient condition and the wheat had better yield, when the reclaimed soil thickness more than 70 cm, it will against the improvement of fly ash, the wheat yield was decreased.[Conclusion] This study provides guidance and reference for reclamation work and agricultural planting.
作者
王长垒
WANG Chang-lei(WESSLING Consulting (Shanghai) Ltd., Shanghai 200233)
出处
《安徽农业科学》
CAS
2019年第9期64-67,共4页
Journal of Anhui Agricultural Sciences
关键词
粉煤灰
复垦土壤
理化性质
养分含量
复垦模式
覆土厚度
Fly ash
Reclaimed soil
Physical-chemical properties
Nutrient content
Reclamation model
Reclaimed soil thickness
