Fertilizer composition containing fibre composite controlled-release dosage and preparation method

Abstract

The invention relates to a fertilizer composition containing a fibre composite controlled-release agent and a preparation method thereof. The method comprises the following steps: firstly, papermaking waste pulp deposit is used as raw material; sodium hypochlorite accounting for 0.3 to 1 percent of the weight of the deposit is weighed up and added and is subjected to the treatment of disinfection, deodorization and sterilization; secondly, the treated waste pulp is transported to a drier for drying; the water content of the waste pump is controlled to between 5 and 15 percent; thirdly, a granular fibre compound is fined through crushing and sieving; and finally, the surface of the granular fibre compound is painted with an osmotic agent and a dispersant for modification treatment to obtain the fibre composite controlled-release agent; and the fibre composite controlled-release agent and a fertilizer substance are evenly mixed and are pelletized by a pelletizer to form the fertilizer composition containing the fibre composite controlled-release agent. The fertilizer composition comprises the following compositions in weight percentage: 40 to 70 percent of the fertilizer substance, 20 to 50 percent of the fibre compound, 1 to 5 percent of the osmotic agent and 1 to 5 percent of the dispersant. The fertilizer composition is easy to obtain the raw materials and has low cost, long fertilizer effect time and high utilization rate and reduces pollution of the fertilizer to the environment. The preparation method is reasonable in process design, simple, feasible, strong in operability and is easy to realize scale production.

Description

technical field [0001] The invention relates to a mixture of one or more fertilizers and components without special fertilizer effects, especially a fiber composite material prepared by using papermaking waste pulp sediments to be used as a controlled release preparation and combined with fertilizer substances to form a Chemical fertilizer composition containing fiber composite controlled release agent and its preparation method. Background technique [0002] Chemical fertilizers are fertilizers made by chemical and / or physical methods that contain one or several nutrients needed for crop growth. They are widely used in agricultural production to improve soil fertility and crop yield per unit area. Chemical fertilizers are easily soluble in water, and will work immediately after fertilization, and will be absorbed by crops in a short period of time. Therefore, in each stage of crop growth, it is necessary to apply various fertilizers, such as nitrogen fertilizer, potassium ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies in the prior art that the utilization rate of traditional chemical fertilizers is low, the production process of slow-release chemical fertilizers is complex and costly, and the sediments of papermaking waste pulp seriously pollute the environment, the present invention provides an improved fiber composite material prepared by using papermaking waste pulp sediments. Combination with fertilizer substances as controlled release preparation after sexual treatment to form chemical fertilizer composition containing fiber composite controlled release agent and preparation method thereof

The chemical fertilizer composition containing the fiber composite controlled-release agent is simple in composition, low in cost, long in effect time of the chemical fertilizer, and less in the loss of fertilizer substances. The preparation method has reasonable process design, is simple and easy to obtain, has strong operability, and is easy to realize large-scale production , and effectively solve the problem of serious environmental pollution caused by papermaking waste pulp