Microelement water-soluble fertilizer and use method thereof

Abstract

The invention discloses a trace element water-soluble fertilizer and a use method thereof, and relates to the technical field of agricultural chemistry. According to the nutritional agent, natural sugar is used as a boron complexing agent, a sugar-boric acid compound capable of being efficiently transported at the phloem of a plant is formed, and the boron absorption efficiency is remarkably improved. The nutrient solution comprises the following components in percentage by weight: 5-20% of boric acid, 15-40% of natural sugar (if sugar / glucose), 1-5% of chelated trace elements, 0.5-2% of a dispersing agent and the balance of water. The application mode comprises foliage spraying (100-200 times of dilution) and drip irrigation / flushing (400-800 times of dilution). The nutritional agent can enhance photosynthesis, promote root growth, improve stress resistance and especially improve the quality of fruits such as citrus, grapes and tomatoes, and is high in environmental compatibility.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural chemistry, and in particular to a trace element water-soluble fertilizer and a use method thereof. Background Art

[0002] Agrochemicals play a vital role in agricultural production, effectively controlling pests and diseases and ensuring the healthy growth of crops. Furthermore, the application of precision agriculture technology has enabled more precise pesticide application, reducing the risk of pesticide damage and improving the safety and efficiency of agricultural production.

[0003] During the process of realizing the present invention, the inventors discovered that the prior art had the following problems: Existing boron fertilizers have the following defects: low absorption efficiency: boric acid is easily fixed by the soil, and the leaf absorption rate is less than 30%; transportation restrictions: boron is difficult to move in the phloem, resulting in boron deficiency in fruits / new tissues; poor safety: excessive application causes leaf burns; weak compatibility: easy precipitation and ineffectiveness when mixed with alkaline pesticides. Summary of the Invention

[0004] In response to the deficiencies of the prior art, the present invention provides a water-soluble trace element fertilizer and a method for use, which address the following drawbacks of existing boron fertilizers: low absorption efficiency: boric acid is easily fixed by the soil, and the leaf absorption rate is less than 30%; transportation limitations: boron is difficult to move in the phloem, resulting in boron deficiency in fruits / new tissues; poor safety: excessive application causes leaf burns; and poor compatibility: easy precipitation and ineffectiveness when mixed with alkaline pesticides.

[0005] To achieve the above objectives, the present invention is implemented through the following technical scheme: a water-soluble trace element fertilizer, composed of the following components in mass percentage: boric acid: 5-20%; natural sugar: 15-40% (preferably fructose, glucose or sugarcane molasses); chelated trace elements: 1-5% (selected from EDTA / citrate of zinc, iron and manganese); dispersant: 0.5-2% (polysorbate 80 or sodium lignin sulfonate); water: balance to 100%.

[0006] Preferably, the molar ratio of the natural sugar to boric acid is (2-4):1, forming a sugar-boric acid complex that can be transported through the phloem.

[0007] A method for using a trace element water-soluble fertilizer: foliar spraying: dilute 100-200 times and apply before 10 a.m. or after 4 p.m. when the fruit develops to maturity; drip irrigation / flushing: dilute 400-800 times and use 100-200L of stock solution per hectare.

[0008] Preferably, avoid mixing with alkaline pesticides with a pH>8, and avoid spraying during high temperature periods (10:00-16:00) in summer.

[0009] Beneficial effects

[0010] The present invention provides a water-soluble trace element fertilizer and a method for use. The present invention has the following beneficial effects: improved absorption and transport efficiency, with a foliar absorption rate of >80%; high transport efficiency, with a phloem boron transport volume reaching 3.2 times that of conventional boron fertilizers; improved safety and compatibility, and no precipitation when mixed with commonly used pesticides. DETAILED DESCRIPTION

[0011] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0012] The present invention provides a technical solution: a water-soluble trace element fertilizer, which is composed of the following components in percentage by mass: boric acid: 5-20%; natural sugar: 15-40% (preferably fructose, glucose or sugarcane molasses); chelated trace elements: 1-5% (selected from EDTA / citrate of zinc, iron and manganese); dispersant: 0.5-2% (polysorbate 80 or sodium lignin sulfonate); water: the remainder to 100%.

[0013] This embodiment is further configured such that the molar ratio of the natural sugar to boric acid is (2-4):1, forming a sugar-boric acid complex that can be transported through the phloem.

[0014] A method for using a trace element water-soluble fertilizer: foliar spraying: dilute 100-200 times and apply before 10 a.m. or after 4 p.m. when the fruit develops to maturity; drip irrigation / flushing: dilute 400-800 times and use 100-200L of stock solution per hectare.

[0015] This embodiment is further configured to avoid mixing with alkaline pesticides with a pH>8, and avoid spraying during high temperature periods (10:00-16:00) in summer.

[0016] Natural sugar-boric acid complex: The cis-diol structure of fructose / glucose forms a stable five-membered ring complex with boric acid, with a molecular weight of <500Da, which can freely enter the phloem sieve tube;

[0017] Synergistic system: Add Zn / Fe / Mn chelate to activate boron transporter;

[0018] Environmental adaptation process: Dispersants improve leaf adhesion and avoid high-temperature photolysis.

[0019]

[0020] The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process. The specific operations are as follows.

[0021] Example 1: Preparation of nutrient: 250 g of fructose and 120 g of boric acid were dissolved in 500 g of 60°C deionized water and stirred until transparent; 20 g of EDTA-Zn and 10 g of polysorbate 80 were added, the volume was adjusted to 1000 g, and the pH was adjusted to 5.5.

[0022] Example 2: Improving grape quality

[0023] Treatment: Spray 150 times diluted solution (30L per mu) during the fruit expansion period, once every 10 days, for a total of 3 times; Results: Single fruit weight increased by 22%, sugar content increased by 18%; Fruit cracking rate dropped from 15% to 3%.

[0024] Example 3: Drip irrigation application

[0025] Treatment: drip irrigation of 600-fold diluted solution (150 L of stock solution per hectare) in tomato planting base;

[0026] Results: Root density increased by 35% and bacterial wilt incidence decreased by 60%.

[0027] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A trace element water-soluble fertilizer, characterized in that: The invention is composed of the following components in percentage by mass: boric acid: 5-20%; natural sugar: 15-40% (preferably fructose, glucose or cane molasses); chelated trace elements: 1-5% (selected from EDTA / citrate of zinc, iron and manganese); dispersant: 0.5-2% (polysorbate 80 or sodium lignin sulfonate); water: the remainder to 100%.

2. A trace element water-soluble fertilizer according to claim 1, characterized in that, The molar ratio of the natural sugar to the boric acid is (2-4):1, forming a sugar-boric acid complex that can be transported through the phloem.

3. A method for using a trace element water-soluble fertilizer, characterized in that: Foliar spraying: dilute 100-200 times and apply before 10 am or after 4 pm when the fruits develop to maturity; drip irrigation / flushing: dilute 400-800 times and use 100-200L of stock solution per hectare.

4. The method for using the trace element water-soluble fertilizer according to claim 3, characterized in that: Avoid mixing with alkaline pesticides with a pH>8, and avoid spraying during high temperature periods (10:00-16:00) in summer.

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