Organic potash fertilizer for drop irrigation and preparation method thereof

Abstract

The invention discloses an organic potash fertilizer for drop irrigation. The organic potash fertilizer comprises the following components in parts by mass: 40-50 parts of potassium lactate, 1-5 partsof potassium succinate, 30-40 parts of potassium acetate and 1-5 parts of potassium succinate. The preparation method comprises the following steps: 1) carrying out microbial fermentation on glycerinto obtain a fermentation broth, adjusting the pH value of the fermentation broth by using potassium hydroxide and carrying out first solid-liquid separation to obtain a thallus thick slurry and a fermentation supernatant; 2) separating from the fermentation supernatant to obtain alcohol and an organic acid potassium salt solid; 3) degrading the thallus thick slurry to obtain thallus degraded thick slurry; 4) carrying out second solid-liquid separation on the thallus degradation thick slurry to obtain thallus degradation clear liquid and filter residues; 5) mixing the organic acid potassium salt solid with the filter residues and adjusting the content proportion of the formula to obtain the organic potassium fertilizer for drop irrigation. The plant absorption speed and the utilization rate of the organic potassium fertilizer are improved by utilizing the similar compatibility of organic matters, and the organic potassium fertilizer is fully water-soluble and is particularly suitable for modern agricultural drop irrigation.

Description

technical field [0001] The invention belongs to the field of agricultural chemical fertilizers, and in particular relates to an organic potassium fertilizer for drip irrigation and a preparation method thereof. Background technique [0002] 1,3-propanediol (1,3-propanediol, referred to as: 1,3-PDO) is an important chemical raw material, which can be used in industries such as materials, solvents, lubricants and antifreeze agents, especially in the material industry, 1 , 3-propanediol can be used to synthesize polytrimethylene terephthalate (PTT). PTT is a biodegradable polyester material with excellent performance. It has good ductility and washability. It has broad application prospects in textiles and plastics, and has a huge market demand. [0003] 1,3-Propanediol can be prepared in a number of ways. Among them, the microbial fermentation of glycerol to produce 1,3-propanediol has mild conditions and high efficiency, and has received more and more attention. In the pro...

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Problems solved by technology

From the observation of the plant growth process, it can be concluded that the total effective rate of inorganic potassium fertilizers has not been fully utilized, so the phenomenon of plant potassium deficiency is more serious. Due to the lack of potassium element, plants get sick and lodging is not uncommon. What is more serious is that the long-term use of inorganic fertilizers will cause the soil to a certain degree. compaction, which affects the production of plant roots

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