Method for producing silicon fertilizer by using chicken manure ash

Abstract

The invention belongs to the field of fertilizers, and particularly relates to a method for a silicon fertilizer by using chicken manure ash. The method includes the steps that sodium carbonate and dolomite powder serve as activators of silicon in the chicken manure ash, chicken manure, sodium carbonate and dolomite powder are mixed evenly in the weight ratio of 1:0.2:0.1, the mixture is calcinated at 800 DEG C, calcium lignosulfonate is added as a grinding aid, ball milling is conducted, then the mixture passes through a 100-mesh sieve and is cooled and packaged, and the silicon fertilizer produced by using the chicken manure ash is obtained. The pH of the fertilizer is 10-12, the content of effective SiO2 is more than or equal to 20wt%, the content of CaO is more than or equal to 10wt%, and the content of heavy metal (Cd, Cr, Pb, As and Hg) content is lower than the content required by the national standard. The harmless treatment and resource utilization of the chicken manure ash is achieved, and the silicon fertilizer plays an important role in improving silicon nutrition of crops and preventing soil acidification and has wide application prospects and market popularization value.

Description

technical field [0001] The invention belongs to the field of fertilizers, and in particular relates to a method for producing silicon fertilizer by utilizing chicken manure ash. Background technique [0002] Silicon is considered to be a beneficial element for plant growth, and silicon can alleviate plant abiotic stress (aluminum, heavy metal and salt stress) and biotic stress (disease and insect pests). Studies have shown that silicon application can improve the resistance of rice to bacterial blight, flax leaf spot, sheath blight, powdery mildew, rice leaf roller and rice planthopper. Silicon has a certain defensive effect on cucumber powdery mildew, pythium, melon powdery mildew and wheat powdery mildew. Menzies et al. treated cucumber plants with nutrient solutions containing different concentrations of sodium silicate, and inoculated powdery mildew bacteria on the leaves, and found that with the increase of silicon concentration in the nutrient solution, the number, ar...