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Localization method of flow directions of soil nitrates

A locating method and nitrate technology, applied in the locating field of soil nitrate flow

Inactive Publication Date: 2018-10-12
JIANGSU FUDA STRAW UTILIZATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for locating the flow direction of soil nitrate. According to the degree of soil secondary salinization in the protected area, it is appropriate to recommend the protected area soil scientific management technology, balanced fertilizer application, and increase fertilizer Utilization rate, on the premise of ensuring the economic benefits of facility agricultural production, reduce or prevent environmental degradation caused by fertilizer application, so as to meet the requirements of sustainable agricultural development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] S1. Select 10 representative acidic soils, neutral soils, and alkaline soils that have been used for 3-5 years, conduct field investigations, and take multi-point sampling back to the laboratory for analysis and determination.

[0017] S2. Soil sampling depths are 0cm-2.5cm, 2.5cm-5cm, 5cm-10cm, 10cm-20cm and 20cm-40cm.

[0018] S3. Determining the total salt content of the soil by using the conductivity method and the drying residue method, and measuring the eight major ions of water-soluble salts and the content of nitrate ions.

[0019] S4. Analyze the contribution of soil nitrate accumulation in protected areas to secondary salinization of soil under different utilization modes (proportion of ions: mass proportion, charge proportion).

[0020] S5. Determine the flow direction of nitrate in the soil, and provide a solid data basis for soil treatment.

Embodiment 2

[0022] S6: Quantitatively weigh the soil sample, place it in a homogenizer to mash and mix, and extract nitrite and nitrate in the soil with ultrasonic waves. Draw a nitrite calibration curve: use nitroso nitrogen (NO2-) standard solution to prepare a standard working solution with a concentration of 0.0, 2.0, 5.0, 10.0, 20.0, 50.0, 100.0μg / L, and use the nitroso nitrogen concentration is the abscissa, the nitroso nitrogen peak area is the ordinate, and the computer automatically draws the calibration curve. Use nitronitrogen (NO3-) standard solution to prepare a standard working solution with a concentration of 0.0, 2.0, 20.0, 100.0, 200.0, 500.0, 1000.0μg / L, take the nitronitrogen concentration as the abscissa, and the nitronitrogen peak area As the ordinate, the computer automatically draws the calibration curve. According to the quantitative addition of nitrite per 1.0 g of pickled vegetables, diazotization with p-aminosulfonamide, coupled with N-(1-naphthyl)ethylenediami...

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PUM

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Abstract

The invention discloses a localization method of flow directions of soil nitrates. The localization method of the flow directions of the soil nitrates can be applied to acid soil,neutral soil and alkaline soil. By means of the localization method of the flow directions of the soil nitrates,according to the soil secondary salinization degree of protected land,a scientific management technology forthe soil of the protected land is recommended appropriately,application of fertilizer is balanced,and the utilization rate of the fertilizer is increased. On the premise of ensuring the economic benefits of agricultural production of facilities,environmental degradation and other problems caused by application of the fertilizer are alleviated or prevented,and therefore the demands for agriculturalsustainable development are met.

Description

technical field [0001] The invention relates to the technical field of locating the flow direction of soil nitrate, in particular to a method for locating the flow direction of soil nitrate. Background technique [0002] Vegetable crops have the characteristics of fast growth, short production cycle, multiple stubble crops, and high fertilizer requirements. In actual production, high yields are often achieved by increasing the application of chemical fertilizers in large quantities. The high input, high accumulation, high waste and high pollution of nutrients in vegetable production have become one of the problems that the society generally pays attention to. Although natural conditions and economic levels vary from place to place, the input levels of chemical fertilizers and organic fertilizers are far higher than the level of fertilization of local field crops. According to the survey of the large-scale vegetable distribution center in Shouguang, Shandong Province, the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 钱晓晴
Owner JIANGSU FUDA STRAW UTILIZATION CO LTD