Method for controlling heavy metal cadmium of rice based on acid adjustment of soil

• Main Authors: WANG MIN, ZHU ZHIWEI, LIU ZHONGQI, LU MINGHE, LIANG RENMIN, LI KUN, TANG QIYUAN, ZHANG WEIXING, GUO LONGPING, MAO XUEFEI
• Format: Patent
• Language: Chinese; English
• Published: 15.06.2018
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED; DISPOSAL OF SOLID WASTE; FISHING; FORESTRY; HORTICULTURE; HUMAN NECESSITIES; HUNTING; PERFORMING OPERATIONS; RECLAMATION OF CONTAMINATED SOIL; RECLAMATION OF CONTAMINED SOIL SOIL; TRANSPORTING; TRAPPING; WATERING

The invention provides a method for controlling heavy metal cadmium of rice based on acid adjustment of soil, and belongs to the technical field of rice soil heavy metal pollution control and safety production. The method comprises the following steps: dynamically monitoring and analyzing rice soil acid-base property and soil texture; 2) applying a calcium carbonate material on the rice soil; 3) according to a pH value of soil in the current year, determining whether the calcium carbonate material is needed to be applied in rice planting in a next season, and determining application amount. Through the method, pH values of the rice soil can be rapidly adjusted, and cadmium content in rice can be effectively reduced, and rice yield and quality are not influenced. The method is suitable to be used in field production management for controlling rice heavy metal cadmium through acid adjustment of soil in different pollution risk regions in China. 种基于土壤调酸控制稻米重金属镉的方法，属于稻田土壤重金属污染控制与安全生产技术领域。其包括以下步骤：动态监测分析稻田土壤酸碱性和土壤质