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 ...