Recommended fertilizer applying method for purple paddy soil based on yield response and agronomic efficiency

A technology of yield response and agronomic efficiency, applied in fertilization methods, fertilization devices, applications, etc., can solve the problems of complex parameter setting, difficult promotion, inconvenient user operation and query, etc., and achieve the effect of high accuracy and reliable method

Pending Publication Date: 2019-04-23
INST OF SOIL FERTILIZER SICHUAN ACAD OF AGRI SCI
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Problems solved by technology

At present, the fertilization recommended by the nutrient expert system is widely used in field crops in my country, but the design of the fertilization expert system developed in

Method used

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  • Recommended fertilizer applying method for purple paddy soil based on yield response and agronomic efficiency
  • Recommended fertilizer applying method for purple paddy soil based on yield response and agronomic efficiency
  • Recommended fertilizer applying method for purple paddy soil based on yield response and agronomic efficiency

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Embodiment

[0067] The purpose of the present invention is to solve the complexity of soil fertility evaluation, to propose a fast, accurate and popular rice field soil fertility evaluation method, and to propose a method for recommending fertilization according to the soil fertility evaluation results.

[0068] Comprehensive Evaluation of Paddy Soil Fertility

[0069] It mainly includes four steps: selection of evaluation index, determination of membership degree value, determination of weight coefficient of evaluation index and calculation of comprehensive index value of soil fertility. Its specific content is:

[0070] 1) Selection of evaluation indicators

[0071] Soil quality indicators are the traits, functions or conditions that monitor and evaluate soil health from the perspective of soil production potential and environmental management. The selection of evaluation indicators should follow the principle of combining comprehensive analysis and leading factors, the principle of s...

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Abstract

The invention belongs to the technical field of soil fertilizers, and discloses a recommended fertilizer applying method for purple paddy soil based on yield response and agronomic efficiency. The method comprises the following steps of S1, respectively calculating membership values of organic substances, total nitrogen, alkali-hydrolyzale nitrogen, effective phosphorus and rapidly available potassium by utilizing a semi-trapezoid membership function, calculating the membership value of pH (potential of hydrogen) value according to a trapezoidal membership function, determining a weight coefficient of each evaluation index based on a correlation coefficient analysis method, and calculating a comprehensive index value of soil fertility by adopting an index pulsing method according to the weight coefficient of each evaluation index and the corresponding membership value; S2, establishing a function model of the comprehensive index value of the soil fertility and the relative yield of rice, and establishing a function model of rice target yield and nitrogen fertilizer yield response; and S3, according to the recommending amount of a nitrogen fertilizer, the recommending amount of a phosphorus fertilizer and the recommending amount of a potassium fertilizer, determining ratios of a base fertilizer and an additional fertilizer. The method disclosed by the invention has the beneficial effects that the method is reliable, and the accuracy is relatively high.

Description

technical field [0001] The invention belongs to the technical field of soil fertilizers, and in particular relates to a recommended fertilization method for purple paddy soil based on yield response and agronomic efficiency. Background technique [0002] Reasonable fertilization can not only ensure high crop yield, but also an important measure to fertilize farmland soil. Scholars at home and abroad have proposed a recommended fertilization method based on above-ground crops. The nutrient expert system recommends fertilization using the QUEFTS model to clarify the nutrient intrinsic efficiency of crops. Based on the relationship between crop yield response and agronomic efficiency, the comprehensive fertilizer type, fertilizer amount, The recommended fertilization method is based on the principles of fertilization time and fertilization location. At present, the fertilization recommended by the nutrient expert system is widely used in field crops in my country, but the desi...

Claims

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Application Information

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IPC IPC(8): A01C21/00
CPCA01C21/005A01C21/007
Inventor 樊红柱陈庆瑞秦鱼生蒋松
Owner INST OF SOIL FERTILIZER SICHUAN ACAD OF AGRI SCI
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