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Determination method of crop soil root system gas content

A determination method and crop technology, which are applied in soil material testing, measuring devices, climate change adaptation, etc., can solve the problems of easy waterlogging, lack of quantitative real-time evaluation methods for soil air and water changes, and crops are susceptible to drought stress, etc. Measuring the effect of accurate data

Pending Publication Date: 2022-05-20
HEBEI RUNNONG WATER SAVING TECH
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Problems solved by technology

Traditional agricultural flood irrigation crops are prone to waterlogging, the air-water ratio in the soil is small, and anaerobic respiration of crop roots is not good for crop growth; when water is scarce, the air-water ratio is high, but crops are susceptible to drought stress, which is not conducive to crop growth
Drip irrigation can be used to control the irrigation quota in real time, but the traditional soil moisture measurement is a manual soil drying method, which cannot locate and maintain the original soil monitoring in real time, and cannot well evaluate the changes in soil air and water.
In particular, there is no quantitative real-time evaluation method for soil air and water changes

Method used

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  • Determination method of crop soil root system gas content

Examples

Experimental program
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Embodiment

[0036] Example of drip irrigation

[0037] From July 25, 2018 to September 10, 2018, the parameters of drip irrigation irrigation system for corn planted in Chifeng, Inner Mongolia, and the water consumption and distribution characteristics of crops in the growth period of drip irrigation corn are shown in Table 1. Through the plot irrigation test observation and the water monitoring map of the corn growth period (see figure 1 ), determined the relationship between the field saturated water content, field water capacity and compensation point (70% field water capacity), and calculated the soil air volume according to the change of root soil water moisture (see figure 2 ).

[0038] Table 1 Under drip irrigation, soil moisture content during corn growth period

[0039] Depth (cm) 10 20 30 40 50 60 total Saturated water content (mm) 29.97 31.48 31.24 37.1 32.87 29.98 192.64 Field water holding capacity (mm) 22.46 29.7 29.24 33.13 30.97 ...

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Abstract

The invention relates to a crop soil root system gas content determination method, which comprises: carrying out in-situ moisture determination on different root system layers of soil, determining the soil saturation water content Vs, the soil field moisture capacity Vc and the soil water content Vw of crops in different growth stages, and calculating to obtain the actual total gas content Valpha of the soil root system, the actual water content Vwi of soil at different depths is measured in real time by using a soil moisture layering tester, and the actual total gas content Valpha of the soil root system is calculated according to the following formula: Va = Sigma Vai = Sigma Vsi-Sigma Vwi. The water content of soil at different depths is detected, the soil gas content is quantitatively calculated through the water change, the moisture content of crop soil root systems is monitored in real time, and nutrient adjustment and irrigation amount are facilitated.

Description

technical field [0001] The invention relates to a method for measuring soil gas content, in particular to a method for measuring soil gas content of crop soil. Background technique [0002] Modern smart agricultural nutrient regulation and irrigation cares about the crop irrigation system, and at the same time cares about the soil air and water irrigation control of the root growth environment of the crops. Traditional agricultural flood irrigation crops are prone to waterlogging, the air-water ratio in the soil is small, and the anaerobic respiration of crop roots is not good for crop growth; when water is scarce, the air-water ratio is high, but crops are prone to drought stress, which is not conducive to crop growth. Drip irrigation can be used to control the irrigation quota in real time and in an appropriate amount. However, the traditional soil moisture measurement is a manual soil drying method, which cannot locate and maintain the original soil in real time for monit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/246G01N33/245Y02A40/22
Inventor 门旗高建铮张国峰
Owner HEBEI RUNNONG WATER SAVING TECH
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