砒砂岩与沙复配成土技术研究综述

Research overview on soft rock and sand compound soil technique

砒砂岩是一种结构松散、利用率较差并广泛分布于我国陕北、内蒙古以及山西等干旱半干旱地区的风化岩石,而砒砂岩与沙复配成土技术的推出,改变了砒砂岩严重危害生态环境、加剧水土流失以及资源大量闲置的现状。通过对砒砂岩与沙复配成土技术作用机理的研究,详细综述了复配技术在土壤固沙能力、土壤物理性质、土壤化学性质以及作物生长和产量等方面的研究进展、应用成效、现有研究的局限。并据此指出复配技术在物理、化学、生物学性质研究尚不充分,技术研究应用周期较短,在土壤固碳和重金属等方面需进一步研究,对于进一步完善砒砂岩资源综合利用具有一定借鉴意义。

The soft rock is a weathered rock with loose structure,poor utilization,which is widely distributed in the Northern Shaanxi Province,Inner Mongolia,Shaanxi Province and some other arid and semi-arid region in China.The soft rock and sand compound soil technique has changed the situation that the soft rock seriously endangers the ecological environment,generates soil erosion and not be explored effectively.In this paper,the formation mechanism of soft rock and sand compound soil was introduced.The research progress,application results,and limitations of existing research on the technique of sand fixation,soil physical properties,soil chemical properties,and the soil influence on crop growth and yield were reviewed.The article also pointed out that the study on physical,chemical and biological properties of the technique was not enough,the application period of the technology was still short,and the soil carbon sequestration and heavy metals in this soil were needed to be further studied.