Environment-friendly composite series fertilizer and its preparation method

Abstract

The invention relates to a compound fertilizer, the mass percent formula of which is: 5-25% of zeolite; 2.0-15% of sepiolite ore; 0.5-5.0% of active additive; 0.03-0.1% of rare earth nitrate; 70-85% of traditional fertilizer The zeolite is one or any combination of two of clinoptilolite and mordenite, with an average particle size of 0.5-45 microns; the active additive is ceramic ultrafine powder, with an average particle size of 0.3-10 microns; The ore is one or any combination of more than one of sepiolite, palygorskite, and attapulgite, with an average particle size of 2-45 microns; the rare earth nitrate is one of cerium nitrate or mixed rare earth nitrate containing cerium A variety of arbitrary combinations, wherein the content of cerium nitrate is not less than 0.03%; the traditional fertilizer is one or any combination of more than one of nitrogen fertilizer, phosphorus fertilizer, and potassium fertilizer. The preparation method of the invention is to firstly prepare 0.04-0.23% rare earth nitrate aqueous solution; then sequentially add materials, mix and mix uniformly, granulate and dry according to the proportion. The product of the invention not only has high-efficiency fertility, but also has the functions of water storage and fertilizer storage, long-acting slow-release, soil improvement, etc., which are friendly to the agricultural ecological environment.

Description

technical field [0001] The invention relates to a fertilizer and a preparation method thereof, in particular to an environment-friendly fertilizer and a preparation method thereof. In addition to conventional nitrogen, phosphorus and potassium elements, this fertilizer also contains additives such as zeolite, sepiolite, active additives, and rare earth nitrate. It has multiple functions such as moisture conservation, water storage and fertilizer storage, long-term slow release, and is environmentally friendly to agriculture. The international patent classification number is proposed to be Int.Cl 7 C05G 3 / 00. Background technique [0002] The existing chemical fertilizers in the domestic and foreign markets are mainly nitrogen fertilizers, phosphorus fertilizers, and potassium fertilizers, which are water-soluble quick-acting fertilizers. Ubiquitous following deficiencies in these fertilizer use processes: (1) fertilizer utilization rate is low: its because of being that f...

AI Technical Summary

Problems solved by technology

Ubiquitous following deficiencies in these fertilizer use processes: (1) fertilizer utilization rate is low: its because of being that fertilizer releases fast, and crop does not have sufficient time to absorb utilization, so fertilizer utilization rate is low; For nitrogen fertilizer, because nitrogen is extremely volatile, Its fertilizer utilization rate is lower; (2) natural conditions have a great influence: fertilization under drought and little rain or no irrigation conditions, the fertilizer effect of this water-soluble quick-acting fertilizer is difficult to bring into play; If the content is too high, this water-soluble quick-acting fertilizer is prone to leaching and waste; (3) the amount of fertilization is difficult to grasp: when the amount of fertilization is too high at one time, it will often cause burnt seedlings, excessive growth of crops or lodging; The amount of fertilizer applied is too low, and it cannot meet the needs of the entire growth period of the crops; and topdressing in batches not only costs a lot of labor and financial resources, but also many chemical fertilizers are not suitable for topdressing, and even topdressing in batches may not achieve the expected effect

However, this fertilizer does not contain conventional components such as nitrogen, phosphorus and potassium, and its fertility is limited, so its application is also greatly restricted.

In addition, the tourmaline content in the fertilizer is as high as 10-50%, the cost is high, and it is not suitable for large-scale agricultural use.