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Slow-release compound fertilizer applicable to plantation of corn

A compound fertilizer and slow-release technology, which is applied in the direction of urea compound fertilizer, inorganic fertilizer, ammonium salt fertilizer, etc., can solve the problems of wasting resources, soil pollution, polluting the environment, etc., and achieves improved yield and quality, simple production process, and slow-release The effect of excellent performance

Active Publication Date: 2013-04-24
甘肃施可丰生态科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 2. The coating material is difficult to degrade, and long-term use will have a negative impact on the soil; even pollute the soil and affect the quality of agricultural products
[0011] 3. The ratio of the main nutrient elements in the fertilizer is not reasonable, and the utilization rate of the fertilizer is low
[0012] 4. Lack of necessary medium or trace elements, incomplete nutrition, affecting yield increase
[0013] 4. The utilization rate of nitrogen fertilizer is low, wasting resources and polluting the environment
[0014] 5. There are not many slow-release compound fertilizers suitable for corn planting

Method used

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  • Slow-release compound fertilizer applicable to plantation of corn
  • Slow-release compound fertilizer applicable to plantation of corn
  • Slow-release compound fertilizer applicable to plantation of corn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Prepare the slow-release compound fertilizer suitable for corn planting application according to the following steps

[0086] Its preparation method comprises the following steps:

[0087] ①. Preparation of potassium fertilizer and nitrogen fertilizer compound

[0088] First, after heating and melting 30 parts by weight of urea, add 10 parts by weight of ammonium sulfate and 25 parts by weight of potassium sulfate and mix uniformly to obtain potassium fertilizer and nitrogen fertilizer compound containing potassium, sulfur and ammonium, which are set aside;

[0089] ②. Preparation of mixed phosphate fertilizer

[0090] a. Preparation of apatite powder

[0091] will contain P 2 o 5 10%~20% apatite is ground into powder, the fineness of apatite powder is controlled to 100 mesh ±10, and it is reserved;

[0092] b. mix

[0093] Mix 50 parts by weight of diammonium phosphate, 30 parts by weight of calcium magnesium phosphate and 20 parts by weight of apatite powder pre...

Embodiment 2～ Embodiment 7

[0117] According to the method and steps of Example 1, the slow-release compound fertilizer suitable for corn planting of the present invention is prepared according to the raw material formula of Table 1

[0118] Table 1

[0119]

[0120] A slow-release compound fertilizer suitable for corn planting and application is obtained; the obtained product has round granules and no peculiar smell;

[0121] The product quality has reached the following technical indicators:

[0122] N element content % ≥15

[0123] P 2 o 5 Content % ≥10

[0124] K 2 O content % ≥10

[0125] Particle size mm 2-4.75mm

[0126] Moisture content wt% ≤ 2.0.

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Abstract

The invention provides a corn-special slow-release long-acting compound fertilizer and belongs to the preparation of a mixture of a plurality of fertilizers and components with no special fertilizer efficiency. The invention is characterized in that the compound fertilizer is prepared by taking compound fertilizer particles as fertilizer cores, then performing coating and dusting powder treatment; the compound fertilizer particles are prepared by the following raw materials by the mass: 15 to 45 parts of urea, 5 to 40 parts of ammonium sulfate, 20 to 35 parts of potassium sulfate, 15 to 35 parts of a mixed phosphate fertilizer, 0.1 to 0.5 part of a zinc and iron additive, 7 to 10 parts of a granulating auxiliary agent and a proper amount of water. A preparation method for the compound fertilizer comprises the following steps: (1) preparation of a compound of a potash fertilizer and a nitrogen fertilizer; (2) preparation of the mixed phosphate fertilizer; (3) preparation of mixed particles of the components of the compound fertilizer; (4) coating with stearic acid; (5) powder spreading of a modified zeolite powder material; and (6) screening, metering, quality inspection and packaging of qualified fertilizer. The scorn-pecial slow-release long-acting compound fertilizer applicable to plantation of corn provided by the invention has overall nutrients and excellent slow releasing performance, improves both output and quality of corn, and saves resources and protects the environment.

Description

technical field [0001] The invention is a slow-release compound fertilizer suitable for corn planting and application. It is a mixture of various fertilizers and components without special fertilizer effects. Background technique [0002] Corn is an important food crop and economic crop. According to statistics, its yield and planting area are second only to rice and wheat, ranking third in the world. It plays an important role in people's livelihood and national economy. Effective use of limited land resources to improve the yield and quality of corn crops is the direction and eternal subject of people's efforts. [0003] The growth and development of corn needs to absorb more than 20 kinds of mineral elements, mainly including nitrogen, phosphorus, and potassium, three major elements; sulfur, calcium, magnesium and other macroelements, and iron, manganese, boron, and copper. Zinc, sodium and other trace elements. Maize growth needs the most nitrogen, followed by phosph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00A01C21/00
CPCC05B3/00C05G5/30C05C3/00C05C9/00C05D1/02C05D9/02
Inventor 吕庆淮吕瑞新邵明升解永军吕晓东赵永强
Owner 甘肃施可丰生态科技有限公司
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