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A Method for Calculating the Amount of Nitrogen, Phosphorus and Potassium in Wheat and Their Combination

A technology of combined nitrogen and fertilization of wheat, applied in fertilization methods, applications, fertilization devices, etc., can solve the problems of inability to coordinate the scientific relationship between wheat fertilizer demand and soil fertility supplementation, and achieve the effect of avoiding waste and obvious effects

Active Publication Date: 2022-03-11
CROP RES INST SHANDONG ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of compound fertilizer also has the above-mentioned problems, and cannot coordinate the scientific relationship between wheat fertilizer requirements and soil fertility supplementation

Method used

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  • A Method for Calculating the Amount of Nitrogen, Phosphorus and Potassium in Wheat and Their Combination
  • A Method for Calculating the Amount of Nitrogen, Phosphorus and Potassium in Wheat and Their Combination

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047]The experimental field of the Crop Research Institute of Shandong Academy of Agricultural Sciences is located on the east side of the Academy of Agricultural Sciences in Licheng District, Jinan City, Shandong Province (N36°42′53.04″E117°05′32.54″E). The level is 527 kg / mu, and 220 kg / mu of compound fertilizer (18-18-18) is applied. It can be seen from query table 1 that the amount of nitrogen carried by the plot in the previous year was 527÷100×6.1=32.14, the amount of phosphorus carried was 527÷100×2.9=15.28, and the amount of potassium carried was 527÷100×7.3=38.47. The effective ratios of soil to nitrogen, phosphorus, and potassium are 0.87, 0.92, and 0.91 respectively, and the inputs of nitrogen, phosphorus, and potassium (pure nutrients) are calculated to be 36.94, 16.61, and 42.27 kilograms respectively. For elemental compound fertilizers, compound fertilizers consistent with or close to 2.2-1-2.5 should be selected for application.

[0048] In 2019, in the experi...

Embodiment 2

[0050] The soil texture of a plot in Mazhuang Town, Tai'an City, Shandong Province is fluvo-aquic soil. The wheat production level in 2018 was 495 kg / mu, and 210 kg / mu of compound fertilizer (18-18-18) was applied. It can be seen from query table 1 that the amount of nitrogen carried by the plot last year was 495÷100×6.2=30.69, the amount of phosphorus carried was 495÷100×3.0=14.85, and the amount of potassium carried was 495÷100×7.4=36.63. The effective ratios of soil to nitrogen, phosphorus, and potassium are 0.82, 0.88, and 0.91 respectively, and the inputs of nitrogen, phosphorus, and potassium (pure nutrients) are calculated to be 37.42, 16.88, and 40.25 kilograms respectively. For elemental compound fertilizer, the compound fertilizer consistent with or close to 2.2-1-2.4 should be selected for application.

[0051] In 2019, according to the nitrogen, phosphorus and potassium wheat season demand and ratio obtained in the previous year, a formula compound fertilizer with ...

Embodiment 3

[0053] The soil texture of a plot in Ancheng Town, Jinan City, Shandong Province is sandy ginger black soil. The wheat production level in 2018 was 515 kg / mu, and 210 kg / mu of compound fertilizer (18-18-18) was applied. It can be seen from query table 1 that the amount of nitrogen carried by the plot in the previous year was 515÷100×6.1=31.42, the amount of phosphorus carried was 515÷100×2.9=14.94, and the amount of potassium carried was 515÷100×7.3=37.60. The effective ratios of ginger black soil to nitrogen, phosphorus, and potassium are 0.89, 0.97, and 0.93 respectively, and the inputs of nitrogen, phosphorus, and potassium (pure nutrients) are calculated to be 35.30, 15.40, and 40.43 kilograms respectively. For three-element compound fertilizers, the compound fertilizers consistent with or close to 2.3-1-2.6 should be selected for application.

[0054] In 2019, according to the nitrogen, phosphorus and potassium wheat season demand and ratio obtained in the previous year, ...

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Abstract

The invention relates to a method for calculating the amount of nitrogen, phosphorus, and potassium in wheat and / or the proportion of application, which is characterized in that the method includes the following steps: calculating the nitrogen, phosphorus, and Potassium carrying amount, and then obtain the fertilizer retention efficiency of exogenous nitrogen, phosphorus, and potassium according to the soil type of the plot, so as to calculate the nitrogen, phosphorus, and potassium application amount and / or ratio of the plot. The invention provides a method for quickly calculating the amount of nitrogen, phosphorus, and potassium in wheat and their proportions. The method is simple, accurate and reliable, and meets the precision needs of wheat growers.

Description

technical field [0001] The invention relates to a method for calculating the amount of nitrogen, phosphorus and potassium in wheat and their proportions. Background technique [0002] The information disclosed in this background section is only intended to increase some understanding of the general background of the present invention, and is not necessarily to be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The nitrogen, phosphorus, and potassium nutrients required for the growth and development of winter wheat are mainly supplemented by the input of compound fertilizers to the soil to meet the needs of wheat. Due to the difference between the formula and the nutrient supply capacity of the farmland during production, farmers blindly choose compound fertilizers. The ratio of fertilizers applied to the farmland cannot accurately match the nutrient requirements of whea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C21/00
CPCA01C21/007A01C21/00
Inventor 李升东朱保侠李宗新王宗帅冯波刘开昌王旭清王法宏李华伟张宾司纪升
Owner CROP RES INST SHANDONG ACAD OF AGRI SCI
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