Slow-released fertilizer for fruit trees

Abstract

The invention relates to a slow-released fertilizer for fruit trees, which comprises the following components in parts by weight: 50-80 parts of crylic acid, 30-50 parts of dried natural sheep manure, 60-90 parts of urea, 10-15 parts of diammonium hydrogen phosphate, 0.5-1.2 parts of calcium, 0.2-1.5 parts of magnesium, 0.4-0.8 part of ferrum, 0.1-0.3 part of boron, 0.05-0.25 part of zinc, 0.25-0.4 part of molybdenum, 10-15 parts of plant ash, 0.1-0.2 part of amino acid and 0.7-0.9 part of alkyl sodium sulfonate. The slow-released trace element fertilizer provided by the invention is environment-friendly, favorable in water conservation performance and good in biological and chemical stabilities, has complete functions and good effects of regulating the growth and development of the plants, and has the effect of insect disease prevention.

Description

technical field [0001] The invention belongs to the field of superabsorbent resins, in particular to a slow-release fertilizer that can be used for fruit trees. Background technique [0002] my country is a large agricultural country, and agriculture is the foundation of the national economy and an irreplaceable primary industry. Modern agriculture is characterized by low input, high output, high efficiency and sustainable development. The closely related chemical fertilizer industry and water resource utilization are the important material basis for modern agricultural production and development. Chemical fertilizers play an important role in agricultural production. According to the estimates of the Food and Agriculture Organization of the United Nations (FAO), 55% of the increase in food production in developing countries comes from the role of chemical fertilizers. However, due to factors such as volatilization, loss, and infiltration, the current seasonal utilization...

AI Technical Summary

Problems solved by technology

[0008] In agricultural applications, due to the high cost of superabsorbent resins, the application and promotion of superabsorbent resins have been seriously hindered. Many domestic scientists have done a lot of work in reducing the cost of superabsorbent resins, but most of the work is mainly concentrated on Add cheap materials such as bentonite, kaolin and attapulgite to the polymerization system to achieve the purpose of reducing costs. Although adding some inorganic minerals can improve the hydrogel strength of the water-retaining material after absorbing water, but the performance is high. The amount of resin soil added is low, which cannot fundamentally reduce the cost of raw materials

In addition, the product function only has the same water absorption and water release functions as ordinary water-absorbent resins, and lacks nutritional functions.

[0009] At present, the amount of fertilization of fruit trees in my country is about twice that of developed countries, and the fertilizer utilization rate is 15% - 30%. Fractional fertilization and slow-release fertilizers are the development trend in the world, but the disadvantages of multiple-stage fertilization are labor-intensive and slow-release fertilizers are expensive limited its technical promotion

[0010] The invention patent application with the publication number CN101113119A discloses a water-retaining fertilizer and its preparation method. It is prepared by mixing a superabsorbent resin with a chelating agent. The chelating agent is used to provide some nutrients, and this method has no way to reduce The processing cost of superabsorbent resin and the addition of various components to the finished product further increase the manufacturing cost, and the proportion of trace elements in the fertilizer is unbalanced, making it difficult to achieve a good fertilizer effect