Chitosan coated controlled release fertilizers and preparation method thereof
A technology of chitosan-coated and controlled-release fertilizers, applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of difficult large-scale promotion and high prices, and achieve the goals of reducing labor intensity, saving resources, and promoting agricultural efficiency. Effect
Inactive Publication Date: 2008-07-30
烟台市昊峰化肥有限公司
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Problems solved by technology
However, due to the high price, few countries except Japan have applied it to agricul
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[0010] The selected ordinary large-grain urea is added to the mixer, stirred for 5 minutes until the particles are uniform, and then transferred to the granulator through the conveyor belt for granulation. The temperature in the granulator is controlled at 40 degrees, the pressure is 4PA, and the temperature is 30 degrees. Dry the granules for 30 minutes, and then evenly spray the chitosan dissolved at a temperature of 80 degrees onto the surface of the granules, dry, and finally perforate each granule on a punching machine and pack it to obtain the present invention. Chitosan coated controlled-release fertilizer.
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The invention relates to controlled release fertilizer with a chitosan capsule and a preparation method for the fertilizer. In the fertilizer common chemical fertilizer is taken as the core and a chitosan coating layer is added outside the fertilizer. The invention also provides a preparation method of the controlled release fertilizer with a chitosan capsule. In the method, the common chemical fertilizer is evenly stirred and is then carried out granulation and parching, and a chitosan coating layer is then evenly sprayed and the fertilizer is perforated and packaged. The fertilizer has the advantages of low cost material and easy obtaining as well as prolonging the fertility of the fertilizer and improving the utilization ratio of the fertilizer, thus reducing the using amount of the fertilizer and reducing the fertilizer loss. Therefore, the invention not only saves the resource, protects the environment, saves time, saves labor and reduces the labor intensity of the peasant, but also can promote the agricultural benefit and peasant income-increasing.
Description
technical field [0001] The invention relates to a chitosan-coated controlled-release fertilizer and a preparation method thereof, belonging to the field of fertilizer production technical background [0002] In recent years, with the rapid increase of fertilization, the grain output has not increased correspondingly. On the other hand, due to the massive application of chemical fertilizers, especially unscientific and blind application, it has also brought serious negative effects on the living environment of human beings. 一 The current chemical fertilizers in our country are mainly quick-acting fertilizers, and the utilization rate is very low. The nitrogen fertilizer is only 30-35%, the phosphorus fertilizer is about 10-20%, and the potassium fertilizer is 35-50%, which is ten percent lower than the world average level. Because The utilization rate is not high, which brings huge economic losses to the society. The second is the excessive application of quick-acting chemical...
Claims
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Inventor 崔文明
Owner 烟台市昊峰化肥有限公司
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