Long-acting slow-release corn special blending fertilizer and preparation method thereof

Abstract

The invention relates to a soil fertilizer technique, in particular to a long-acting slow-release corn special blending fertilizer and a preparation method thereof to solve the problems that the nitrogen and phosphorus utilization rate of the fertilizer is low, the after manuring in the corn growth period consumes a large amount of time and labor and the like. The blending fertilizer comprises the following components in percentage by weight: 45 to 58 percent of nitrogen fertilizer, 16 to 25 percent of phosphate fertilizer, 16 to 25 percent of potassium fertilizer, and 4 to 14 percent of nitrogen phosphorus fertilizer synergist; and nutritive substances of the blending fertilizer comprise the following components in percentage by weight: 24 to 28 percent of pure nitrogen, 8 to 12 percent of diphosphorus pentanitride, and 10 to 15 percent of potassium oxide. The preparation method comprises the following steps: adding the granular nitrogen fertilizer, phosphate fertilizer, potassium fertilizer and the nitrogen phosphorus fertilizer synergist into a mixing and stirring machine according to the weight ratio, mixing and stirring the materials evenly to obtain the long-acting slow-release corn special blending fertilizer, and performing sub-package to obtain the finished product; or selecting a urease inhibitor, a nitrification inhibitor and a phosphate fertilizer synergist to granulate by mixing so as to obtain the granular nitrogen phosphorus fertilizer synergist, and then blending the granular nitrogen phosphorus fertilizer synergist with the granular nitrogen fertilizer, phosphate fertilizer and potassium fertilizer to obtain the finished product. The long-acting slow-release corn special blending fertilizer and the preparation method have simple process and easy implementation, are suitable for one-step basal application without after manuring for corn production in the Northeast, and reduce the usage amount by 10 to 20 percent without reducing the yield.

Description

technical field [0001] The invention relates to soil fertilizer technology, in particular to a special blended fertilizer for long-acting slow-release corn and a preparation method thereof. Background technique [0002] Excessive and unscientific application of fertilizers leads to waste of resources, environmental pollution and decreased productivity of farmland. The problem is even more serious in our country under the condition that the contradiction between man and land is extremely prominent and the farmland is intensively used. The utilization rate of nitrogen fertilizer in my country is only 30-45%, and the seasonal utilization rate of phosphorus fertilizer is 10-20%, which is 20 percentage points lower than that of developed countries, and the efficiency of fertilization is low. Therefore, the high-efficiency utilization technology of soil and fertilizer nitrogen and phosphorus is currently a hot spot in the field of soil fertilizer research, an urgent need to reali...

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a kind of long-acting slow-release special blend fertilizer for corn and its preparation method, utilize conventionally used large-grain nitrogen fertilizer, granular phosphorus fertilizer and granular potassium fertilizer, add nitrogen-phosphorus fertilizer synergist, and make corn special-purpose fertilizer by blending method It is environmentally friendly and simple in process, mainly solving the problems of low nitrogen and phosphorus utilization rate of fertilizers and the laborious and laborious problems of topdressing fertilizers during the growth period of corn.

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