CN214801064U - Laboratory soil culture device capable of measuring ammonia volatilization of soil - Google Patents
Laboratory soil culture device capable of measuring ammonia volatilization of soil Download PDFInfo
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- CN214801064U CN214801064U CN202121006772.8U CN202121006772U CN214801064U CN 214801064 U CN214801064 U CN 214801064U CN 202121006772 U CN202121006772 U CN 202121006772U CN 214801064 U CN214801064 U CN 214801064U
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Abstract
The utility model discloses a can survey volatile laboratory soil of soil ammonia and bank up device with earth who belongs to agricultural soil characteristic detection technical field. The laboratory soil culture device is formed by inserting an ammonia volatilization collecting cylinder into the upper part of a culture tank and placing the ammonia volatilization collecting cylinder on a built-in platform on the upper part of the culture tank; the upper end and the lower end of the ammonia volatilization collecting cylinder are respectively clamped into the upper layer sponge and the lower layer sponge; the inner diameter of the upper section of the culture tank is larger than that of the lower section of the culture tank, so that a built-in platform of the culture tank is formed. The device has scientific design, simple structure and convenient operation, and can reduce the sampling error; the soil culture device is suitable for large sample soil samples or complex factor interaction tests; adopt the utility model discloses the soil ammonia numerical value that volatilizees of survey is more accurate.
Description
Technical Field
The utility model belongs to the technical field of agricultural soil characteristic detects, in particular to can survey volatile laboratory soil of soil ammonia and bank up with earth device
Background
Soil ammonia volatilization is affected by many factors, such as temperature, rainfall, wind speed, soil physicochemical properties, fertilizer type and fertilization method. By adopting the indoor culture test, the influence of a single factor on the ammonia volatilization of the soil can be determined under the control condition (for example, the temperature, the humidity and the fertilization mode are controlled, and the ammonia volatilization potentials of different soils are compared), or the interaction influence on the ammonia volatilization under different environments, fertilization management and soil conditions is used, so that the mechanism and the influencing factor of the ammonia volatilization of the soil are determined. Some ammonia volatilization collecting and measuring devices, such as a soil ammonia volatilization measuring device with the publication number of CN205404418U, adopt a closed acid absorption method, belong to a passive absorption method, and have low ammonia recovery efficiency; although the n-shaped vent pipe adopted by the simple soil volatile ammonia absorption device with the publication number of CN203606187U can avoid the influence caused by rainfall, the lack of gas exchange increases the ammonia volatile resistance of soil weather, thereby resulting in underestimating the loss of ammonia volatilization.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a laboratory soil culture device capable of measuring ammonia volatilization in soil, which is characterized in that an ammonia volatilization collection cylinder is inserted into the upper part of a culture tank and is arranged on a built-in platform on the upper part of the culture tank;
the upper end and the lower end of the ammonia volatilization collecting cylinder are respectively clamped into the upper layer sponge and the lower layer sponge.
The inner diameter of the upper section of the culture tank is larger than that of the lower section of the culture tank, so that a built-in platform of the culture tank is formed.
Soil is contained in the culture tank.
The ammonia volatilization collecting cylinder body is composed of a section of hollow cylinder and two pieces of sponges containing phosphoglycerol, which are arranged in the upper end and the lower end of the hollow cylinder.
The outer diameter of the ammonia volatilization collecting cylinder body is smaller than the inner diameter of the upper section of the culture tank, and the ammonia volatilization collecting cylinder body can be freely inserted or taken out.
The thickness of the tube wall of the ammonia volatilization collecting cylinder body is consistent with the width of the built-in platform of the culture tank.
One culture tank of the laboratory soil culture device is provided with two or more ammonia volatilization collecting barrels; the body loss caused by replacing the ammonia volatilization collecting cylinder can be reduced when the ammonia is replaced at the set time.
The utility model has the advantages of scientific design, simple structure, convenient operation and reduced sampling error; the soil culture device is suitable for large sample soil samples or complex factor interaction tests. Adopt the utility model discloses the soil ammonia numerical value that volatilizees of survey is more accurate.
Drawings
FIG. 1 is a schematic structural diagram of a laboratory soil culture device for measuring ammonia volatilization in soil.
Reference numbers in the figures: 1. the culture tank 2, culture tank built-in platform 3, ammonia volatilize and collect barrel, 4, upper sponge, 5, lower floor's sponge.
Detailed Description
The utility model provides a can survey volatile laboratory soil of soil ammonia and banket up with earth the device, it is right to combine the attached drawing below the utility model discloses carry out concrete implementation and explain.
FIG. 1 is a schematic structural diagram of a laboratory soil culture device for measuring ammonia volatilization in soil. The laboratory soil culture device for measuring ammonia volatilization in soil shown in FIG. 1 is composed of an ammonia volatilization collecting cylinder 3 inserted into the upper part of a culture tank 1 and placed on a platform 2 built in the culture tank on the upper part of the culture tank; the upper end and the lower end of the ammonia volatilization collecting cylinder 3 are respectively clamped into the upper layer sponge 4 and the lower layer sponge 5. Wherein, the inner diameter of the upper section of the culture tank 1 is larger than that of the lower section, and a platform 2 arranged in the culture tank is formed. The ammonia volatilization collecting cylinder 3 is composed of a section of hollow cylinder and two pieces of sponge containing phosphoglycerol which are arranged in the upper end and the lower end. The outer diameter of the ammonia volatilization collecting cylinder 3 is smaller than the inner diameter of the upper section of the culture tank 1, and the ammonia volatilization collecting cylinder 3 can be freely inserted into the upper section of the culture tank 1 or taken out from the upper section of the culture tank 1; meanwhile, the thickness of the tube wall of the ammonia volatilization collecting cylinder 3 is consistent with the width of the platform 2 arranged in the culture tank, and two or more ammonia volatilization collecting cylinders are arranged in one culture tank of the laboratory soil culture device; releasing ammonia gas after applying nitrogenous fertilizer to soil in the culture tank, and continuously measuring the volatilization loss of the soil ammonia by using a laboratory soil culture device for measuring the volatilization of the soil ammonia; the body loss caused by replacing the ammonia volatilization collecting cylinder can be reduced when the ammonia is replaced at the set time.
Examples
As shown in figure 1, soil to be measured is added into a culture tank 1 to be applied with fertilizer after volume weight and humidity are adjusted, the culture tank has the specification of 6cm inside diameter multiplied by 10cm high, and the specification is smaller and is suitable for large sample soil or complex factor interaction test design. Ammonia volatilization was measured by aeration, and two sponges with a thickness of 2cm and a diameter of 7cm were each soaked uniformly with 2ml of a glycerol phosphate solution (50ml of phosphoric acid added with 40ml of glycerol, followed by a constant volume of 1000 ml). Two sponges are respectively placed in two ports of a hollow cylinder (the specification is 6cm inside diameter multiplied by 6cm high) of the ammonia volatilization collecting cylinder 3; thereby forming an ammonia volatilization collecting cylinder. The ammonia volatilization collection cylinder body is inserted into the culture tank, the lower end of the ammonia volatilization collection cylinder body 3 is connected with the built-in platform 2 of the culture tank for supporting, the upper layer sponge 4 prevents ammonia gas in the air from entering, the lower layer sponge 5 absorbs and measures the volatilization loss of the ammonia in the soil, the lower layer sponge 5 is replaced every 24h, the replaced lower layer sponge is vibrated and extracted for 60min by 1mol/L potassium chloride, the ammonium nitrogen content of the solution is measured by adopting a continuous flow analyzer, and the volatilization flux of the ammonia in the soil is calculated by combining the volume of the extract, the inner diameter of the culture tank and the ammonium concentration. Is calculated by the formula
Wherein A is ammonia volatilization flux (kg N ha)-1d-1)；naFor the determination of ammonium nitrogen concentration (mg L)-1) (ii) a v is the volume of the leach solution (L); m is the cross-sectional area of the sponge (m)2) (ii) a t is the sponge standing time (d).
Claims (6)
1. A laboratory soil culture device capable of measuring ammonia volatilization of soil is characterized in that an ammonia volatilization collecting cylinder is inserted into the upper part of a culture tank and is placed on a built-in platform on the upper part of the culture tank; the upper end and the lower end of the ammonia volatilization collecting cylinder are respectively clamped into the upper layer sponge and the lower layer sponge; the inner diameter of the upper section of the culture tank is larger than that of the lower section of the culture tank, so that a built-in platform of the culture tank is formed.
2. The laboratory soil culture device capable of measuring ammonia volatilization in soil according to claim 1, wherein the ammonia volatilization collection cylinder is composed of a section of hollow cylinder and two pieces of sponges containing glycerol phosphate, which are arranged in the upper end and the lower end of the hollow cylinder.
3. The laboratory soil culture device capable of measuring ammonia volatilization in soil according to claim 1, wherein the outer diameter of the ammonia volatilization collection cylinder is smaller than the inner diameter of the upper section of the culture tank, and the ammonia volatilization collection cylinder can be freely inserted or taken out.
4. The laboratory soil culture device capable of measuring ammonia volatilization in soil according to claim 1, wherein the thickness of the tube wall of the ammonia volatilization collection cylinder body is consistent with the width of the platform arranged in the culture tank.
5. The laboratory soil culture device capable of measuring ammonia volatilization of soil according to claim 1, wherein two or more ammonia volatilization collection cylinders are arranged in one culture tank of the laboratory soil culture device; the body loss caused by replacing the ammonia volatilization collecting cylinder can be reduced when the ammonia is replaced at the set time.
6. The laboratory soil culture device capable of measuring ammonia volatilization of soil as claimed in claim 1, wherein the culture tank contains soil, and dynamic loss of ammonia volatilization of soil is measured after the culture tank is applied to the soil.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121006772.8U CN214801064U (en) | 2021-05-12 | 2021-05-12 | Laboratory soil culture device capable of measuring ammonia volatilization of soil |
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| CN202121006772.8U CN214801064U (en) | 2021-05-12 | 2021-05-12 | Laboratory soil culture device capable of measuring ammonia volatilization of soil |
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| CN214801064U true CN214801064U (en) | 2021-11-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114397424A (en) * | 2021-12-20 | 2022-04-26 | 中国科学院南京土壤研究所 | Soil ammonia determination method for determining natural abundance of nitrogen isotopes |
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2021
- 2021-05-12 CN CN202121006772.8U patent/CN214801064U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114397424A (en) * | 2021-12-20 | 2022-04-26 | 中国科学院南京土壤研究所 | Soil ammonia determination method for determining natural abundance of nitrogen isotopes |
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