Soil ammonia volatilization and capturing device of ridge tillage method planting land and calculation method

Abstract

The invention relates to the technical field of soil ammonia volatilization and capturing and in particular relates to a soil ammonia volatilization and capturing device of a ridge tillage method planting land and a calculation method. The soil ammonia volatilization and capturing device of the ridge tillage method planting land comprises a first sampling box body arranged at a ridge platform position and a second sampling box body arranged at a ridge furrow position; gas inlets of the first sampling box body and the second sampling box body are correspondingly communicated with a first ventilation pipeline and a second ventilation pipeline respectively; gas outlets of the first sampling box body and the second sampling box body are correspondingly communicated with a first sampling pipeline and a second sampling pipeline respectively; the first sampling pipeline is provided with a first ammonia gas absorption device and the second sampling pipeline is provided with a second ammonia gas absorption device. According to the soil ammonia volatilization and capturing device of the ridge tillage method planting land, provided by the invention, ammonia gas which is volatilize on soil surfaces of a ridge platform and a ridge furrow can be collected respectively, and furthermore, the ammonia volatilization amount in different fertilizer regions when a ridge tillage method planting manner is used for applying nitrogen fertilizer is accurately determined.

Description

technical field [0001] The invention relates to the technical field of soil ammonia volatilization capture, in particular to a soil ammonia volatilization capture device and a calculation method for ridge tillage planting land. Background technique [0002] Ammonia volatilized into the atmosphere due to unreasonable nitrogen fertilization in agricultural production will re-enter farmland and ecosystems in the form of dry and wet deposition, causing soil acidification and nitrogen enrichment in ecosystems, and ammonia can interact with acidic compounds in the atmosphere and Water is combined into sulfate compound aerosol, which is an important component of smog or PM2.5, which has a significant impact on air quality. Therefore, in order to reduce the volatilization of ammonia, it is necessary to understand the change trend of ammonia volatilization, so as to propose countermeasures. [0003] At present, there are many types of capture devices for ammonia volatilization in fa...

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Problems solved by technology

However, for different field farming methods, such as furrow farming and small high-bed farming, it is necessary to arrange the position of the sampling box in the field reasonably, so that not only the fertilizer is applied to the ridge or furrow, but the ammonia volatilization of the soil surface of the representative land sample can be captured. , and the sampling box can not only cover the high emission area of ​​the fertilization platform (ditch), but also consider the low emission area of ​​the non-fertilization platform (ditch) and the transition zone between them, so if the location of the sampling box is not representative, it cannot Accurate determination of ammonia volatilization on the soil surface of the measured plot

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