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A kind of nano goethite-amino acid compound foliar fertilizer, preparation method and application

A nano-goethite and amino acid technology, applied in application, nitrogen fertilizer, liquid fertilizer, etc., can solve problems such as shortage, and achieve the effects of high surface charge, more structural hydroxyl groups, and improved adhesion and residence time.

Active Publication Date: 2017-06-13
NANJING AGRICULTURAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At present, people add chemically synthesized surfactants to soften the waxy layer on the leaf surface and promote nutrients to enter the leaf epidermis, but there is no effective method for how to improve the adhesion and residence time of nutrients on the leaf surface

Method used

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  • A kind of nano goethite-amino acid compound foliar fertilizer, preparation method and application
  • A kind of nano goethite-amino acid compound foliar fertilizer, preparation method and application
  • A kind of nano goethite-amino acid compound foliar fertilizer, preparation method and application

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Embodiment 1

[0031] 1. Synthesis and characterization of nano goethite

[0032] Under the action of magnetic stirring, in a polyethylene plastic beaker, use 2.5M 125ml KOH solution to titrate 0.5M 30ml Fe(NO 3 ) 3 Solution, after the KOH is completely titrated, put the obtained suspension in a 60°C oven for constant temperature aging for 100 hours; after cooling to room temperature, centrifuge the obtained yellow precipitate at 8000rpm / min, and then wash the precipitate with deionized water , this cycle was repeated 6 times, and finally the obtained precipitate was dried at 40° C. and ground to obtain nano goethite. The synthesized nano-goethite was observed with a 200kV field emission transmission electron microscope (TEM) to observe its morphology and particle size, and the instrument model was JEM-2100F. Firstly, nano goethite was made into a suspension, ultrasonically dispersed for 10 min, the suspension was dropped on the copper grid, and after drying, the drop was repeated for 3 ti...

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Abstract

The invention belongs to the field of fertilizer production and provides a preparation method and the application of a nano goethite-amino acid compound leaf fertilizer. The nano goethite-amino acid compound leaf fertilizer is prepared from nano goethite, amino acid hydrolysate and deionized water, wherein the concentration of the goethite is 1g / L. The preparation process of the nano goethite-amino acid compound leaf fertilizer comprises the following steps: (1) preparing the nano goethite; (2) preparing the amino acid hydrolysate; and (3) obtaining the nano goethite-amino acid compound leaf fertilizer. The nano goethite in the nano goethite-amino acid compound leaf fertilizer is capable of effectively adhering to the surfaces of plant leaves, and therefore, the problems of low utilization rate and non-obvious growth promoting effect due to short retention time period and poor stability of the leaf fertilizer on the plant leaves are solved, and furthermore, the acting time of the amino acid compound leaf fertilizer is effectively prolonged, the utilization rate and the application effect of the leaf fertilizer are increased and the growth of tomato plants is greatly promoted.

Description

technical field [0001] The invention belongs to the field of fertilizer manufacture, and provides a nano goethite-amino acid compound foliar fertilizer, a preparation method of the foliar fertilizer, a tomato growth-promoting agent made by using the foliar fertilizer and an application in tomato growth-promoting. Background technique [0002] Foliar fertilization is an important supplement to soil root fertilization, and has become an important fertilization technology in modern agricultural production. The application of foliar fertilizer has the characteristics of fast nutrient absorption, strong pertinence, high nutrient utilization rate, simple application method, and reduced investment in agricultural production. However, the waxy layer of plant leaves is composed of fatty acids, lipids, ketones, primary alcohols, secondary alcohols and other hydrophobic organic substances, which have an adverse effect on the retention and penetration of spray liquid on the leaves. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00
CPCC05C11/00C05D9/02C05G5/23
Inventor 孙立飞冉炜刘红军沈其荣
Owner NANJING AGRICULTURAL UNIVERSITY
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