| abstract |
A novel organic fertilizer for controlling the pollution or accumulation of heavy metal cadmium in rice and its preparation and application method belong to the technical field of fertilizers. The fertilizer is based on 100 kilograms of organic materials with a water content of 15%, adding 0.05 to 5 kilograms of iron salts calculated as iron, and iron salts calculated as iron: manganese salts calculated as manganese: zinc salts calculated as zinc and The mass ratio of the copper salt in terms of copper is 1:0.2 to 8:0.08 to 2:0.001 to 0.5, and manganese salt, zinc salt and copper salt are added. The organic fertilizer of the invention is developed based on the chemical process of heavy metal cadmium in paddy soil, the absorption process of rice root system and the process of plant cadmium transfer, and has the advantages of convenient application, low usage amount, low price and low usage cost, and is generally suitable for heavy, The farmland with moderate and mild cadmium pollution has wide adaptability. |