Soil testing formula fertilizer for apples and preparation method thereof

Abstract

The invention provides soil testing formula fertilizer for apples. The soil testing formula fertilizer is prepared from the following raw materials in parts by weight: 10 to 100 parts of sodium alginate, 20 to 150 parts of humic acid, 200 to 500 parts of urea, 30 to 400 parts of monoammonium phosphate, 200 to 500 parts of potassium sulfate, 50 to 300 parts of calcium magnesium phosphorous fertilizer and 1 to 10 parts of EDTA chelated calcium, magnesium, zinc and boron. The soil testing formula fertilizer for the apples is prepared through the following steps: after measuring the raw materials,mixing the raw materials; after mixing and stirring uniformly, conveying a mixture into a granulating machine; introducing steam into the granulating machine and carrying out pelleting and granulation; controlling the material temperature to be 35 DEG C to 45 DEG C; then carrying out primary drying (controlling the material temperature at an outlet in a primary drying process to be 60 DEG C to 75DEG C); the carrying out primary cooling and cooling; after cooling, sieving; carrying out secondary drying on a sieved semi-finished product (controlling the material temperature at the outlet in asecondary drying process to be 50 DEG C to 60 DEG C) and cooling; after cooling, carrying out sieving and film coating treatment; metering and packaging to obtain a product. According to the soil testing formula fertilizer for the apples, provided by the invention, the utilization rate of nutrients can be improved and the yield increasing effect is remarkable; the quality of the apples also can beimproved and the soil testing formula fertilizer for the apples has relatively good economical, social and environment benefits and has a wide market prospect.

Description

technical field [0001] The invention belongs to the technical field of agricultural fertilization, and in particular relates to a formula fertilizer for apple soil testing and a preparation method thereof. Background technique [0002] Soil testing formula fertilization is mostly used in the balanced fertilization of grain crops in the field. It is generally divided into three processes. One is soil testing, taking soil samples to determine the soil nutrient content; "Prescribing and dispensing according to the prescription"; the third is to fertilize rationally, that is, to apply formula fertilizer scientifically under the guidance of agricultural scientific and technological personnel. This balanced fertilization technology is not easy for farmers to master, and it can only be truly realized after the technology is materialized. That is, the one-stop service of testing, mixing, production, supply, and application. The professional department conducts soil testing and form...

AI Technical Summary

Problems solved by technology

[0004] 1. Long-term use will harden the soil, reduce fertility, seriously damage the aggregate structure of the soil, and seriously damage the ecological environment

[0005] 2. The nutrients in the granules are not uniform, the fertilization period is short, and the nutrient release law cannot match the long growth cycle of apples or even the nutrient absorption law across the year. Top dressing is required, resulting