Chemical fast determining method of soil and crop nutrition content

A soil and crop technology, applied in the agricultural field, can solve the problems of high laboratory cost and long time

Inactive Publication Date: 2007-01-31
李楠
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0030] The invention provides a chemical rapid test method for soil and crop nutrients to solve the problems of high cost and long time in conventional laboratories when testing soil and crop nutrients

Method used

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  • Chemical fast determining method of soil and crop nutrition content
  • Chemical fast determining method of soil and crop nutrition content
  • Chemical fast determining method of soil and crop nutrition content

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Embodiment approach

[0145] In one embodiment of the present invention: also include:

[0146] 5. Rapid measurement of soil moisture content

[0147] Moisture content in soils is often variable, and often very variable. In order to facilitate the comparison of the nutrient content in the soil, the measurement results are often expressed in terms of the nutrient content in the dry soil. For this reason, the moisture content in the soil must be measured in order to calculate the weight of the wet soil equivalent to a certain amount of dry soil. At the same time, the determination of the moisture content in the soil is useful for understanding whether the moisture content in the soil is suitable for crop growth.

[0148]First weigh the empty aluminum box, then weigh 5 grams of fresh soil sample in the aluminum box, add 3-4 ml of alcohol, stir well, ignite, and when the combustion is almost exhausted, stir the soil sample to help it burn completely, such as soil If the sample is not dried, add 2-3 m...

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Abstract

The invention relates to a chemical test method for earth and crop nutrient. It includes the following steps: earth sample gathering and processing, rapid testing earth alkali-hydrolyzable nitrogen, rapidly available phosphorus, and rapidly available potassium, gaining the tested liquid of earth or crop and dropping into the two holes in dropping board, comparing the standard color gradation and calculating rapid test value by regression equation. The advantages of the invention are easy to operate, rapid, certain accuracy, and convenient to carry, etc.

Description

technical field [0001] The invention belongs to a method for measuring soil and crop nutrients in the technical field of agriculture. Background technique [0002] Agriculture occupies an important position in our country. In order to increase production and income, a large amount of chemical fertilizers need to be applied every year. According to statistics, the national average amount of pure nutrient (NPK) applied per mu is 11.21 kg / mu, and some provinces, such as Jilin Province, reach 16.77 kg. The input of chemical fertilizers is about 25-40 yuan per mu. In order to pursue high yields, individual farmers use more than 20 kilograms of pure nutrients in chemical fertilizers per mu, and the investment has increased to about 80 yuan. Doing so violates the law of scientific fertilization, resulting in diminishing returns, increasing production without increasing income, and increasing production costs. How to apply fertilizers is scientific. We should choose and match var...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78G01N21/25G01N1/04G01N1/38
Inventor 李楠
Owner 李楠
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