Environment-friendly composite series fertilizer and its preparation method

Abstract

The invention relates to a composite fertilizer whose formulation (by mass percent) includes, zeolite 5-25%, sepiolite 2.0-15%, reactive addition agent 0.5-5.0%, nitric rare earth 0.03-0.1%, traditional fertilizer 70-85%. The process for preparing the fertilizer consists of preparing 0.04-0.23% of nitric rare earth aqueous solution, charging by proportion, mixing uniformly and drying.

Description

technical field [0001] The invention relates to a compound fertilizer and a preparation method thereof, in particular to an environment-friendly compound fertilizer series and a preparation method thereof. In addition to the conventional nitrogen, phosphorus and potassium elements, this compound series fertilizer also contains additives such as zeolite, sepiolite, active additives, and rare earth nitrate. Soil, moisture absorption and moisture conservation, water storage and fertilizer storage, long-term slow-release and other functions, a series of compound fertilizers that are friendly to agriculture and the environment, the international patent classification number is proposed to be Int.C1 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 ...

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.