LIU Jian-ming1, LIU Shan-ke1, HAN Cheng1, SHENG Xue-bin2, QI Xin1, ZHANG Zi-ling3

1. Key Laboratory of Mineral Resources, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;
2. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
3. Agricultural Bureau of Yangxin County, Shandong 251800, China

Abstract: Soils in China are rapidly degrading (including acidification, heavy metal pollution, salinization, compaction, soil fertility loss, nutritional imbalance, chemical fertilizer and pesticide pollution, soil erosion, etc.), resulting in sharp decline of agricultural production capacity and environmental buffer capacity of soils. Thus, soil remediation and improvement are critically needed in China. Soils were produced from rocks by long-term weathering processes at the earth surface. Mineral nutrients in soils are key factor for plant growing. Therefore, mineral technology is the core of soil remediation and improvement. We have developed three mineral technologies for soil remediation and improvement: 1) micro-pore mineral fertilizer with multi-elements including potassium, silicon and calcium, focusing on remediation of soil agricultural production capacity; 2) modified clay mineral technology focusing on remediation of environmental buffer capacity; 3) mineral cementing technology focusing on restoration of soil loss resulting to desertification.

Keywords: soil degradation soil remediation and improvement mineral technology