Soil column device for simulating influences of manure on soil leaching, greenhouse gas emission, and ammonia volatilization

Abstract

The invention provides a soil column device for simulating influences of manure on soil leaching, greenhouse gas emission, and ammonia volatilization. According to the soil column device, an inner isolation tube is arranged in a gas collecting cover; the inner isolation tube is used for covering plants, so that a high-stalk plant planted in the soil can penetrate through the gas collecting cover to be exposed; the gas collecting cover only covers a small section of stem near the ground surface of the high-stalk plant, so that the soil column device can be used for performing simulation experiment on the soil planted with the high-stalk plant; the bottom end of the inner isolation tube is inserted in the soil to isolate the plant from the soil, so that the gas such as carbon dioxide released by metabolism of the plant is prevented from being mixed into the gas volatilized by the soil, and the detection precision is improved; and a liquid level indicator tube for leaching solution is provided, so that the liquid level of the leaching solution at the inner bottom of a soil filling tube can be conveniently and efficiently known.

Description

technical field [0001] The invention relates to the technical field of soil experiment simulation devices, in particular to a soil column device for simulating the effects of manure on soil leaching, greenhouse gas emissions and ammonia volatilization. Background technique [0002] At present, in the process of studying the effects of fertilizers, especially manure, on soil leaching, greenhouse gas emissions and ammonia volatilization, due to the difficulty and time-consuming outdoor in-situ tests, people often arrange simulation tests indoors. Some existing simulation devices can simulate one of the three experimental indicators of nutrient leaching, greenhouse gas emissions and ammonia volatilization, but they cannot truly reflect the soil conditions. Some field crops, such as wheat, corn and other high-stalk crops cannot be tested . Contents of the invention [0003] The object of the present invention is to provide a soil column device for simulating the influence of ...

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Problems solved by technology

[0002] At present, in the process of studying the effects of fertilizers, especially manure, on soil leaching, greenhouse gas emissions, and ammonia volatilization, due to the difficulty and time-consuming outdoor in-situ experiments, people often arrange simulation experiments indoors.

Some existing simulation devices can simulate one of the three experimental indicators of nutrient leaching, greenhouse gas emissions and ammonia volatilization, but they cannot truly reflect the soil conditions. Some field crops, such as wheat, corn and other high-stalk crops cannot be tested

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