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A high-nitrogen high-sulfur slow release fertilizer for saline-alkali land and applications thereof in plantation of salix alba

A technology of slow-release fertilizer and saline-alkali land, which is applied to high-nitrogen-sulfur slow-release fertilizer in saline-alkali land and its application in white willow planting. Problems, to achieve the effect of promoting skin metabolism, improving medicinal value, and improving medicinal value

Inactive Publication Date: 2015-09-09
WEIFANG YOURONG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] my country's inland saline-alkali soil is mainly distributed in Northeast China, North China, Northwest China and other places. Although gardens and green spaces are built on good land in some areas, irrigation with underground saline water will also cause secondary saline-alkali soil. The most intuitive realization of saline-alkali soil It is soil compaction and poor soil structure. After irrigation, soil particles are easy to disperse and form crusts, thereby preventing water infiltration and reducing soil water storage capacity.
[0003] Existing nitrogen and sulfur fertilizers will cause a lot of loss through leaching and runoff during the use of saline-alkali land, causing waste and polluting the environment
[0004] Slow-release fertilizer is an important way to improve fertilizer utilization. Existing slow-release fertilizers have some shortcomings in improving saline-alkali land, which limits their application in saline-alkali land improvement. The shortcomings of slow-release fertilizers are: (1) The fertilizer effect is short and the release speed is fast; (2) the soil pH, soil alkalinity, and soil bulk density cannot be reduced at the same time; (3) the improved soil has low survival rate, small growth, and poor root system. Developed, poor fruit quality

Method used

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  • A high-nitrogen high-sulfur slow release fertilizer for saline-alkali land and applications thereof in plantation of salix alba
  • A high-nitrogen high-sulfur slow release fertilizer for saline-alkali land and applications thereof in plantation of salix alba
  • A high-nitrogen high-sulfur slow release fertilizer for saline-alkali land and applications thereof in plantation of salix alba

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 A kind of high nitrogen and sulfur slow-release fertilizer in saline-alkali land

[0029] (1) Fertilizer formula

[0030]

[0031] (2) Preparation method

[0032] a. Melting

[0033] The urea is melted at a high temperature of 136-140°C, enters the buffer tank, and is metered and sent to the mixing tank;

[0034] b. Preheating

[0035] After measuring maleic anhydride, tetronic acid, biochemical fulvic acid, humic acid, chelated zinc, chelated copper, and ammonium sulfate, they are sent to the mixer according to the proportion and fully mixed, and then sent to the mixing heater. Heating to 100-110°C;

[0036] c. Low-temperature eutectic preparation

[0037] Mix the molten phosphorus nitrate prepared in step a and the preheated raw material prepared in step b evenly, and mix them with a high-speed shear mixer to make a slurry. The mixing time of the slurry is 5-6 minutes to form a low-temperature eutectic with certain flow properties , and control t...

Embodiment 2

[0042] Embodiment 2 A kind of saline-alkali land high nitrogen sulfur slow-release fertilizer

[0043] (1) Fertilizer formula

[0044]

[0045] (2) Preparation method

[0046] The fertilizer was prepared by the preparation method of Example 1, only the capsule wall material used for the coating was changed, and the capsule wall material used was bisphenol A epoxy resin.

Embodiment 3

[0047] Embodiment 3 A kind of high nitrogen and sulfur slow-release fertilizer in saline-alkali land

[0048] (1) Fertilizer formula

[0049]

[0050] (2) Preparation method

[0051] The fertilizer was prepared by the preparation method of Example 1, only the capsule wall material used for the covering film was changed, and the capsule wall material used was polyacrylic acid.

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Abstract

A high-nitrogen high-sulfur slow release fertilizer for saline-alkali land is provided. The slow release fertilizer comprises following components by mass: 33-41 parts of maleic anhydride, 11-15 parts of tetronic acid, 28-32 parts of urea, 12-15 parts of biochemical fulvic acid, 6-9 parts of humic acid, 1-3 parts of chelated zinc, 1-3 parts of chelated copper, 14-18 parts of ammonium sulfate and 1.4-1.8 parts of a capsule wall material. Applications of the slow release fertilizer in plantation of salix alba are also provided. The beneficial effects of the slow release fertilizer and the applications are that the fertilizer efficiency of the slow release fertilizer is prolonged by 35-40 days, the pH of the soil is reduced to 7.7-7.9, the degree of alkalization of soil is reduced to 11.8-12.4%, the soil bulk density is reduced to 0.91-0.97 g / cm<3>, the slow release fertilizer is used for plantation of the salix alba in the saline-alkali land, the survival rate of transplanting of the salix alba is 95.5-97.3%, fruit quality is improved and medicinal value is improved.

Description

technical field [0001] The invention provides a fertilizer and its application in planting white willow, in particular to a high-nitrogen-sulfur slow-release fertilizer in saline-alkali land and its application in planting white willow, which belongs to the technical field of soil fertilizer. Background technique [0002] my country's inland saline-alkali soil is mainly distributed in Northeast China, North China, Northwest China and other places. Although gardens and green spaces are built on good land in some areas, irrigation with underground saline water will also cause secondary saline-alkali soil. The most intuitive realization of saline-alkali soil It is soil compaction and poor soil structure. After irrigation, soil particles are easy to disperse and form crusts, thereby preventing water infiltration and reducing soil water storage capacity. [0003] Existing nitrogen fertilizers and sulfur fertilizers will produce a lot of losses through leaching and runoff during th...

Claims

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Application Information

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IPC IPC(8): C05G3/00A01G17/00
Inventor 王胜
Owner WEIFANG YOURONG IND
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