Slow release compound fertilizer applicable to plantation of tobacco

Abstract

The invention provides a slow release compound fertilizer applicable to plantation of tobacco. The slow release compound fertilizer is a mixture of a plurality of fertilizers containing substances which exert influence on nitrification of urea in soil and components with no special fertilizer efficiency and is prepared by taking compound fertilizer particles as the fertilizer core, then performing coating and dusting powder treatment. The compound fertilizer particles are prepared from the following raw materials by mass: 20 to 45 parts of urea, 10 to 20 parts of ammonium sulfate, 20 to 40 parts of potassium sulfate, 10 to 30 parts of a mixed phosphate fertilizer, 0.1 to 0.5 part of a zinc, copper, boron and molybdenum additive, 6 to 12 parts of a granulating auxiliary agent and a proper amount of water. A preparation method for the slow release 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 the compound fertilizer particles; (4) coating with stearic acid; (5) powder spreading of a modified zeolite powder material; and (6) screening. The invention provides the slow release compound fertilizer applicable to plantation of tobacco which has overall nutrients and excellent slow releasing performance, not only enables a high fertilizer utilization rate to be obtained, but also improves both output and quality of tobacco.

Description

Technical field [0001] The invention is a slow-release compound fertilizer suitable for tobacco planting and application. It is a mixture of various fertilizers containing substances that affect the nitrification of urea in the soil and non-special fertilizer components. Background technique [0002] Tobacco is an important food crop and economic crop, and its output and planting area have a clear upward trend. It occupies an important position in people's livelihood and national economy. The economic benefits of tobacco depend on the yield and production cost of tobacco leaves. The quality of tobacco leaves is the goal that people pursue unremittingly. Effective use of limited land resources to improve the yield and quality of tobacco crops is the direction of people's efforts. [0003] Tobacco is a typical potassium-loving crop. It needs to absorb most of the potassium during its growth. Potassium is known as the quality element of tobacco. The application of potassium ferti...

AI Technical Summary

Problems solved by technology

[0011] 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

[0012] 3. The ratio of the main nutrient elements in the fertilizer does not match the needs of each stage of tobacco growth, and the fertilizer utilization rate is low

[0013] 4. Lack of essential trace elements, incomplete nutrition, affecting yield increase

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