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Special compound fertilizer for soybean and preparation method thereof

A compound fertilizer and soybean technology, applied in the directions of inorganic fertilizers, urea compound fertilizers, fertilizer mixtures, etc., can solve the problems such as the inability to fully meet the needs of soybean growth, the difficulty in retaining beneficial microbial components, and the volatile loss of effective components. Soil burden, avoidance of continuous tillage obstacles, and the effect of increasing organic matter content

Inactive Publication Date: 2021-11-05
ANHUI SIERTE FERTILIZER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Soybeans will gradually increase their demand for nutrients during the growth period, and the nutrient elements contained in general fertilizers are too simple to fully meet the needs of soybean growth. At this time, if soybeans cannot absorb the required nutrients due to improper fertilization Some trace elements will affect the yield in the later period. Some nutrients urgently needed for soybean growth include nitrogen, phosphorus, potassium, calcium, etc., and the demand for each element is different. Therefore, there must be a suitable for soybean growth. special compound fertilizer
[0003] The existing new fertilizers mainly include slow-release fertilizers, water-based fertilizers, biological fertilizers, etc. Among them, the mixed use of organic fertilizers and inorganic fertilizers is a common method. At present, the problems of this type of fertilizer mainly focus on the utilization rate of fertilizer efficiency. The active ingredients of organic matter are often volatile and lost in hot and humid environments, resulting in low utilization rates. At the same time, harmful ingredients in organic matter will pollute the soil twice, and it is difficult to retain beneficial microbial ingredients, which cannot improve soil vitality.

Method used

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  • Special compound fertilizer for soybean and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Made of modified urea obtained by the following steps:

[0030] Step S1, the three-necked flask was added 54.3g biphenyl dicarboxylic acid, 51.8g 1,3- propanediol, 5.9 g of urea, dibutyl tin dilaurate, stir, purged with argon, the reaction temperature was raised to 130 ℃ 0.5 H, then continue the reaction temperature was raised to 220 deg.] C 5h, cooled to 80 ℃, is switched to the pressure reactor and heated to 220 deg.] C, adjusted to a degree of vacuum of the reaction -0.1MPa 2h, to give intermediate 1, wherein dibutyltin dilaurate the amount of tin associated acid, 1,3-propanediol, 0.03% of the total mass of urea;

[0031] Step S2, three-necked flask was added Intermediate 1, tolylene diisocyanate, purged with argon, the reaction temperature was raised to 80 deg.] C IH, then heated to 160 ℃ incubated IH, cooled to room temperature, to give intermediate 2, intermediate 1 wherein, toluene diisocyanate mass ratio of 10: 1;

[0032] Step S3, the prepared chitosan was added 50...

Embodiment 2

[0035] Made of modified urea obtained by the following steps:

[0036] Step S1, the three-necked flask was added 54.8g biphenyl dicarboxylic acid, 52.1g 1,3- propanediol, 6g urea, dibutyl tin dilaurate, stir, purged with argon, the reaction temperature was raised to 135 deg.] C 0.5h , and then continuing the reaction temperature was raised to 220 deg.] C 5h, cooled to 80 ℃, is switched to the pressure reactor and heated to 220 deg.] C, adjusted to a degree of vacuum of the reaction -0.1MPa 2h, to give intermediate 1, wherein dibutyltin dilaurate with an amount of acid, 0.03% of the total mass of 1,3-propylene glycol, urea;

[0037] Step S2, three-necked flask was added Intermediate 1, tolylene diisocyanate, purged with argon, the reaction temperature was raised to 80 deg.] C IH, then heated to 160 ℃ incubated IH, cooled to room temperature, to give intermediate 2, intermediate 1 wherein, toluene diisocyanate mass ratio of 10: 1;

[0038] Step S3, the prepared chitosan was added 50...

Embodiment 3

[0041] Made of modified urea obtained by the following steps:

[0042] Step S1, the three-necked flask was added 55.1g biphenyl dicarboxylic acid, 52.3g 1,3- propanediol, 6.1 g of urea, dibutyl tin dilaurate, stir, purged with argon, the reaction temperature was raised to 140 deg.] C 1h , and then continuing the reaction temperature was raised to 220 deg.] C 6h, cooled to 80 ℃, is switched to the pressure reactor and heated to 220 deg.] C, adjusted to a degree of vacuum of the reaction -0.1MPa 3h, to give intermediate 1, wherein dibutyltin dilaurate with an amount of acid, 0.03% of the total mass of 1,3-propylene glycol, urea;

[0043] Step S2, three-necked flask was added Intermediate 1, tolylene diisocyanate, purged with argon, the reaction temperature was raised to 80 deg.] C 2h, then heated to 160 ℃ incubated IH, cooled to room temperature, to give intermediate 2, intermediate 1 wherein, toluene diisocyanate mass ratio of 10: 1;

[0044] Step S3, the chitosan solution prepared 5...

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Abstract

The invention discloses a special compound fertilizer for soybean, and belongs to the technical field of compound fertilizers. The compound fertilizer comprises the following raw materials in parts by weight: 23.5-25.8 parts of soybean straw, 10.3-15.4 parts of pine bark powder, 1.2-2.5 parts of polyvinylpyrrolidone, 0.8-1.5 parts of epoxidized soybean oil, 0.2-0.4 parts of titanium dioxide, 0.2-0.4 parts of magnesium sulfate, 0.2-0.3 parts of zinc sulfate, 0.1-0.2 parts of borax and 8.5-12.4 parts of modified urea. The invention also discloses a preparation method of the special compound fertilizer for soybean. The soybean straw and the like are prepared into straw biomass carbon which contains nutrient elements such as nitrogen, phosphorus, potassium and sulfur beneficial to crop growth and can promote reproduction of microorganisms, in addition, modified urea is heated and melted and then sprayed to the raw materials to form a protective film, so that the content of the nutrient element nitrogen is greatly increased, and the fertilizer is not easy to volatilize and lose in a humid and hot environment.

Description

Technical field [0001] The present invention belongs to the technical field compound fertilizers, relates to one kind of soybean special fertilizer and its preparation method. Background technique [0002] Soybean growing gradually larger demand for nutrition, and general fertilizer nutrients contained too single, can not fully meet the growth required for soybeans, due to improper fertilizing at this time if not necessary for the absorption of soy after some trace elements affect the late production, some of soybean growth needed nutrients include nitrogen, phosphorus, potassium, calcium, and the demand of each element are not the same, so there must be a suitable soybean growth specific fertilizer. [0003] The new fertilizer mainly conventional type slow-release fertilizer, aqueous fertilizer, biological fertilizer, wherein the organic fertilizer with the use of inorganic fertilizers is a common mixing methods, the current problems existing fertilizer focused on the utilizatio...

Claims

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Application Information

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IPC IPC(8): C05G3/00C05G3/40C05G3/60C05G3/80C05G5/12C05G5/30
CPCC05C9/00C05G3/00C05G3/40C05G3/60C05G3/80C05G5/12C05G5/37C05G5/38C05D5/00C05D9/00C05D9/02
Inventor 董慧
Owner ANHUI SIERTE FERTILIZER IND