Humic acid type spring broad bean special compound fertilizer

Abstract

The invention relates to a special humic acid type compound fertilizer for broad beans. The compound fertilizer is prepared from the following raw materials in percentage by weight: 60-80% of a bio-char organic fertilizer matrix, 2-6% of urea, 12-25% of monoammonium phosphate, 3-5% of potassium sulphate, 2.5-4.5% of calcium superphosphate and 0.005-0.015% of microelements. The compound fertilizer provided by the invention not only can be used as nutritional elements required in the full growth period of broad beans, but also can provide sufficient humus to the soil, so that the soil structure is improved.

Description

technical field [0001] The invention relates to the technical field of agriculture, in particular to a special compound fertilizer for humic acid type spring broad bean. Background technique [0002] At present, in the production of spring broad beans in northern my country, the customary method of combining organic and inorganic fertilizers is generally adopted. Organic fertilizers are directly applied to the soil as base fertilizers, and inorganic fertilizers (including nitrogen, phosphorus, and potassium fertilizers) are used as seed fertilizers at one time when planting. Applying it to the soil, and through years of experiments and demonstrations, the optimum nitrogen, phosphorus, and potassium fertilizer usage for spring broad beans has been summarized, which has made a greater contribution to the increase in spring broad bean production. However, the organic fertilizers used in production are mainly cattle, sheep, pigs, chickens and human feces. These organic fertilizer...

AI Technical Summary

Problems solved by technology

However, the organic fertilizers used in production are mainly cattle, sheep, pigs, chickens and human feces. These organic fertilizers are directly applied to the soil without decomposing, and the heavy metal content in them exceeds the standard. At the same time, it is mixed with harmful substances such as weed seeds, germs, and pests. Cause soil pollution, and spread diseases, insect pests and weeds, affecting spring broad bean production

In addition, after the direct application of inorganic fertilizers, the N, P, K and other elements contained in them will be lost along with the runoff and leaching of rainwater, the absorption and utilization rate of broad beans will decrease, and the fertilization benefits will decrease.