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A Quantitative Fertilization Method Based on Nutrient Conversion Rate

A quantitative fertilization and conversion rate technology, applied in fertilization methods, fertilization devices, agriculture, etc., can solve problems such as low effectiveness and easy nitrogen loss, and achieve the goal of fertilizing soil, reducing fertilizer non-point source pollution, and increasing the economic benefits of fertilization. Effect

Active Publication Date: 2021-02-23
GUANGXI TEACHERS EDUCATION UNIV
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AI Technical Summary

Problems solved by technology

Nitrogen is easily lost in the soil (volatilization and seepage, etc.); phosphorus is easily fixed in the soil, and the availability is low; generally, the soil provides more potassium, and fertilizer potassium is also fixed to a certain extent

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0023] The present embodiment provides a quantitative fertilization method based on the nutrient conversion rate, the method determines the amount of fertilization by establishing a fertilization model based on the nutrient conversion rate, and the fertilization model is determined in the following manner:

[0024] (1) Determine the nutrient conversion rate

[0025] K yield =W yield / W input ,

[0026] K yield is the nutrient conversion rate, W yield is the amount of nutrients taken away by the yield of plots with the optimal amount of fertilizer applied in the field test of fertilizer, W input is the fertilization rate of the best fertilization rate plot in the fertilizer field test; wherein, nitrogen (N), phosphorus (P2O5, the same below), and potassium (K2O, the same below) are calculated respectively;

[0027] Among them, the output of the plot with the best fertilization amount refers to the plot with the highest yield among the 14 plots in the "3414 Fertilizer Fiel...

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PUM

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Abstract

The present invention relates to the technical field of crop fertilization, and in particular to a quantitative fertilization method based on nutrient conversion rate. The method determines the amount of fertilization by establishing a fertilization model based on nutrient conversion rate. The fertilization model is determined in the following manner: (1 ) to determine the nutrient conversion rate; (2) to determine the ratio K and Y of the adjustment amount of fertilization in the plot; (3) to determine the ecological and economical fertilization model. The quantitative fertilization method based on the nutrient conversion rate provided by the present invention can determine the optimal fertilization amount of the area and plot only according to the nutrient conversion rate and soil nutrient content determined by the fertilizer field test, so that the quantitative fertilization is simplified and practical; Quantitative fertilization by region or by plot can be realized, and on the premise of ensuring yield and quality, it can increase the economic benefits of fertilization, fertilize the soil and reduce the non-point source pollution of fertilizers.

Description

technical field [0001] The invention relates to the technical field of crop fertilization, in particular to a quantitative fertilization method based on nutrient conversion rate. Background technique [0002] At present, there are three main types of quantitative fertilization models: one is the model based on the soil nutrient content to calculate the recommended fertilization amount, which is called the soil test recommended fertilization model; The best recommended fertilization amount is called the fertilizer effect function model. The third type is to determine the recommended fertilization plan at that time by measuring the nutrient content in the leaves during the growth period of the crop. It is called the nutritional diagnosis method. The third type is more suitable for topdressing. . [0003] The first and second types of models are the main fertilization models, in which the apparent utilization rate of fertilizers and soil nutrients are the most important fertil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C21/00
CPCA01C21/007
Inventor 侯彦林侯显达王铄今刘书田贾书刚
Owner GUANGXI TEACHERS EDUCATION UNIV
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