High-calcium-content secondary element water-soluble fertilizer and preparation method thereof

Abstract

The invention discloses a high-calcium-content secondary element water-soluble fertilizer and a preparation method thereof. The full-water-soluble suspension calcium fertilizer is prepared from the following raw materials in parts by weight: 1.0-3.0 parts of EDTA, 0.4-0.8 part of boric acid, 0.1-0.2 part of anhydrous cupric sulfate, 0.2-0.5 part of manganese chloride, 0.1-0.3 part of zinc chloride, 0.001 to 0.005 part of sodium molybdate, 0.5 to 3.0 parts of potassium hydroxide, 3 to 8 parts of urea, 7 to 10 parts of magnesium chloride, 3 to 6 parts of calcium formate, 50 to 65 parts of calcium ammonium nitrate, 0.1 to 0.4 part of ferrous chloride, 3 to 6 parts of a stabilizing agent, 0.02 to 0.06 part of a surfactant, 4.0 to 8.0 parts of a thickening agent and 10 to 12 parts of water. According to the invention, through process control on feeding sequence, reaction conditions and the like, and selection of additives such as a thickening agent, a stabilizing agent and the like, extremely high content of calcium and trace elements can stably exist in a liquid phase at the same time, and simultaneous supplement of extremely high content of calcium and trace elements can be realized.Other nutrient elements are considered while calcium is highlighted, and the problem of antagonism among elements caused by single fertilization is effectively prevented.

Description

technical field [0001] The invention belongs to the field of crop nutritional preparations, and in particular relates to a water-soluble fertilizer with extremely high calcium content and a medium element and a preparation method thereof. Background technique [0002] Fertilizer is an essential material support for promoting plant growth and increasing crop production, and it is also one of the important conditions for the development of agricultural production. China is one of the countries that consume a lot of agricultural fertilizers in the world. At present, the common fertilizers on the market are high-concentration solid fertilizers with relatively single components, such as urea and nitrophosphate fertilizers. These fertilizers can only provide a large amount of nitrogen, phosphorus, and potassium. Nutrient elements, almost do not contain medium elements and trace elements, so that the crops have low lodging resistance, resistance to diseases and insect pests, and cr...

AI Technical Summary

Problems solved by technology

[0005] Japanese patent P2000-193894 relates to the preparation of high-concentration elemental calcium fertilizer, but the composition is single, and does not contain magnesium, zinc, boron and surfactant; patent CN102701800A, the preparation technology of super-active fully water-soluble calcium-boron fertilizer, although it involves calcium-boron fertilizer, but the calcium in the raw material exists in an ion state, and the absorption efficiency is obviously affected; patent CN102503657A and patent CN101318861A both involve the preparation of calcium-boron foliar fertilizer, on the one hand, the content of boron in the prepared foliar fertilizer is low, on the other hand Calcium and boron cannot be mixed in various proportions, and do not contain magnesium and zinc nutrients, resulting in the inability to meet the absorption of different nutrients by different crops; Patent CN103159531A, a liquid fertilizer containing a variety of phytoalcohols and medium and trace elements chelated and its Although the preparation method contains medium and trace elements, the nutrient content is low, resulting in higher production costs and packaging costs