Method for preparing liquid boron fertilizer with surface active function

Abstract

The method of preparing liquid boron fertilizer with surface activity includes the following steps: 1. mixing borax, boric acid and / or boron trioxide in 2-8 molar portions, organic compound A in 1-2 molar portions and water in 2-5 molar portions, heating to 90-120 deg.c to dissolve and reflux reaction for 2-3 hr; and 2. cooling to 80-100 deg.c, adding organic compound B in 0.5-1 molar portions, further reflux reaction for 1-1.5 hr, cooling to room temperature to obtain the liquid boron fertilizer. The compound A is at least one of ethylene diamine, diethanolamine, diethylidene triamine, etc; and the compound B is at least one of glycerin, fatty acid, fatty acid acyl halide, etc. The liquid boron fertilizer has high content, quick acting and no pollution.

Description

Technical field: [0001] The invention relates to a liquid boron fertilizer, in particular to a preparation method of a liquid boron fertilizer with a surface active function. Specifically, it relates to a method for preparing a water-soluble liquid boron fertilizer whose pure boron content can reach 150 grams per liter. Background technique: [0002] Boron is an essential micronutrient element for crops. Boron has a specific physiological function and role in the growth process of crops, which cannot be replaced by other nutrients. More than 95% of the cultivated land in my country is deficient in boron, and boron fertilizers are needed for crops to grow. Normal growth, and the most used as boron fertilizer in agricultural production is industrial borax or boric acid, and industrial borax is used as fertilizer in agricultural production to have the following problems: [0003] 1. Industrial borax has little solubility at room temperature and is greatly affected by temperatur...

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Problems solved by technology

[0003] 1. Industrial borax has little solubility at room temperature and is greatly affected by temperature. It must be dissolved in hot water first and then diluted for application;

[0004] 2. After the application of industrial borax, it often recrystallizes on the surface of plant leaves or in the soil or is fixed by the soil and cannot be used by plants, resulting in the local accumulation of a large amount of inactive boron nutrients in the soil. When the temperature rises in the next year, the crystallized or fixed Boron will be re-dissolved and released again, and the local boron concentration in the soil will greatly exceed the standard, which can easily cause boron poisoning in crops;

[0005] 3. It is impossible for industrial borax to take into account the physiological characteristics of crops absorbing nutrients in agricultural production, and its spreading, adhesion, and rain erosion resistance on the leaf surface cannot be considered. Therefore, the utilization rate of boron nutrients is low, and a large amount of boron Loss is not only a waste of resources but also a pollution to the environment;

[0006] 4. At present, the boron fertilizers used in agricultural production are all solid or some trace boron nutrients are added to compound / mixed fertilizers, and the effective boron content of the aqueous solution is very limited

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