Determination method, correction method and method for designing rice fertilization formula of nitrogen nutrient application reduction model based on controlled-release fertilizer
A technology for determining methods and controlled release fertilizers, applied in fertilization methods, fertilization devices, applications, etc., can solve the problems of low fertilizer utilization rate, high cost, environmental pollution, etc.
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[0066] The method for designing rice fertilization formula based on the nitrogen nutrient reduction model of controlled release fertilizer provided by the present embodiment comprises the following steps:
[0067] 1. The determination method of the nitrogen nutrient reduction model based on controlled release fertilizer,
[0068] S11, determine the basic formula of rice fertilization; specifically, it can be determined according to the "Technical Specifications for Soil Testing Formula Fertilization (2011 Revised Edition)";
[0069] Generally, the amount of pure nitrogen (N) applied to early rice is 10-12kg / mu, and the amount of phosphorus applied (P 2 o 5 ) is 5-6kg / mu, and the amount of pure potassium applied (K 2 O) is 8-10kg / mu; the general nitrogen application rate (N) of late rice is 12-14kg / mu, and the phosphorus application rate (P 2 o 5 ) is 5-6kg / mu, potassium application rate (K 2 O) is 8-10kg / mu. The controlled-release period of controlled-release urea for ea...
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