Fertilizer with high contents of phosphorus and potassium and preparation method thereof

Abstract

The invention relates to a fertilizer with high contents of phosphorus and potassium. The fertilizer is prepared from a phosphorus-containing compound and a potassium-containing compound, wherein the content of phosphorus in the fertilizer is 40 to 60% in terms of phosphorus pentoxide, and the content of potassium in the fertilizer is 40 to 60% in terms of an oxidizing agent. According to the invention, a non-conventional formula is employed to prepare the nitrogen-free fertilizer with excellent effect and high contents of phosphorus and potassium; the fertilizer can effectively control the growth of crops in an early stage and promote seedling hardening, rooting and blossom of the crops; in the later stage of the growth of the crops, the fertilizer can better promote expanding and coloring of fruit and accumulation of mesome substances in fruit and promote generation of growth activity substances, so the utilization rates of macroelement, medium elements and trace elements in crops can be substantially increased, and yield increase of the crops is realized; and the fertilizer is especially applicable to plants which do not need nitrogen in the whole growing period but have higher demands for phosphorus and potassium.

Description

technical field [0001] The invention relates to the technical field of fertilizers, in particular to a high-phosphorus-potassium fertilizer and a preparation method thereof. Background technique [0002] As a large agricultural country, my country's rapid development of agricultural technology is accompanied by a sharp increase in fertilizer demand. In recent years, the application of fertilizers in agricultural production has increasingly become a concern of people. Fertilizers are a magic weapon to increase plant production. However, improper use or long-term use of chemical fertilizers such as nitrogen and phosphorus will damage the soil structure, resulting in soil compaction and arable land. Soil degradation, shallow cultivation, and reduced water and fertilizer retention capacity will affect plant yield and quality, and even fertilizers will indirectly produce substances harmful to the environment and humans, causing great harm to people's health and the environment. ...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many kinds of fertilizers on the market, and each fertilizer inevitably contains various elements such as nitrogen, phosphorus, and potassium. This type of fertilizer cannot well satisfy some plants that do not need nitrogen during the growth period; in addition , although this type of fertilizer contains many elements, the content of various elements cannot well meet the growth needs of plants, o

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