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Red paddy soil fertility evaluation method with relative yield considered

A technology of relative yield and soil fertility, applied in the direction of instruments, data processing applications, resources, etc., can solve problems such as incomplete reflection of soil productivity, variability, and impact on rice yield.

Inactive Publication Date: 2018-11-23
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI +1
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Problems solved by technology

No matter how many indicators are considered, they cannot fully reflect the productivity of the soil
However, in addition to the influence of soil properties, rice varieties, water and fertilizer management, and pest control measures can significantly affect rice yields.
Therefore, traditional fertility evaluation methods often have the defect of being different from the actual fertility of paddy fields.

Method used

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  • Red paddy soil fertility evaluation method with relative yield considered
  • Red paddy soil fertility evaluation method with relative yield considered
  • Red paddy soil fertility evaluation method with relative yield considered

Examples

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Embodiment 1

[0048] A kind of paddy field soil fertility evaluation method considering relative yield, comprises the following steps:

[0049] (1) Define and classify the main indicators of rice field soil fertility quality evaluation:

[0050] The first category: soil pH;

[0051]The second category: soil organic matter, soil total nitrogen, soil total phosphorus, soil total potassium, soil alkaline nitrogen, soil available phosphorus, soil available potassium, capillary porosity;

[0052] The third category: soil bulk density;

[0053] The fourth category: soil microbial biomass carbon, soil microbial biomass nitrogen;

[0054] The fifth category: relative rice yield, where, relative rice yield = actual rice yield / local maximum yield or maximum yield potential of the variety*100%;

[0055] Select 9 paddy fields in a certain area, and see Table 2 for the soil physicochemical properties and relative yield of each paddy field:

[0056]

[0057] (2) Define the calculation method:

[...

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Abstract

The invention discloses a red paddy soil fertility evaluation method with relative yield considered. The method comprises the following steps: (1) main indicators for paddy soil fertility quality evaluation are defined and classified, and 13 evaluation indicators are divided to five classes; (2) a calculation method is defined: a, membership is calculated, b, the weight coefficient of each singlefertility quality indicator is calculated, and c, a comprehensive fertility indicator is calculated; and (3) result accuracy is defined. According to the evaluation method with relative yield considered provided in the invention, the contradiction between a soil fertility level and rice yield performance when the traditional FUZZY method is used to evaluate the soil fertility can be solved, for example, a high soil fertility indicator is acquired by FUZZY, however, due to unreasonable management, the rice yield is low, or, a low soil fertility indicator is acquired by FUZZY, however, due to anenhanced management level, the rice yield is high. Compared with the FUZZY method, the method with the yield considered is more credible, accurate and subjective, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of soil fertility evaluation, and in particular relates to a method for evaluating soil fertility of red soil paddy field considering relative yield. Background technique [0002] Paddy soil is the main soil type in my country's main grain producing areas. However, due to the influence of soil development, environmental conditions and human management level, the fertility level of paddy soil in different regions is quite different. 10%, 58%, and 32% of the area. Therefore, it is very necessary to carry out research on paddy soil fertility of different grades. [0003] The FUZZY method has always been the main research method of soil fertility quality evaluation. It mainly divides the fuzzy boundaries in the research objects through the determination of the degree of membership. Then, the weight coefficient of the fertility index is determined by calculating the correlation coefficient between each index. T...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/06393G06Q50/02
Inventor 张会民柳开楼黄晶李亚贞刘淑军韩天富张俊张卫建马常宝薛彦东
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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