organic fertilizer for application, and other NPK fertilizers were added and granulated by a double roller granulator

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Therefore, in the production of economic crops, it is necessary to fully develop and rationally use organic fertilizer. Because the main characteristic of organic fertilizer is that its nutrient content is higher than other organic fertilizers, the ratio of carbon and nitrogen (C / N) is relatively narrow, generally between 6 and 10. For this reason, some crushed rice straw was added to form a mixed organic fertilizer for application, and other NPK fertilizers were added and granulated by a double roller granulator. In this way, we can clean the environment and ensure the quality and safety of fruit and vegetable products. The application of organic fertilizer can partly replace the supply of nitrogen and phosphorus in crops, so as to reduce the application of fertilizer and improve the utilization rate of fertilizer.

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