Method for observing amount of leaching of nitrogen and phosphorus in soil with lifting process of shallow underground water level
A groundwater level and phosphorus element technology, which is applied in the agricultural field, can solve the problem that nitrogen, phosphorus and other elements are leached into groundwater and cannot be monitored, and achieve the effect of ingenious design, convenient construction and simple structure
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Embodiment 1
[0030] Embodiment 1 is an embodiment in which when the groundwater level falls above the bottom surface of the soil holding bucket 1, formula I is used to calculate the leaching amount of nitrogen or phosphorus in the soil during the process of rising and falling with the shallow groundwater.
[0031] combine as figure 1 — Image 6 , the present invention observes nitrogen or phosphorus element leaching amount in the soil in the process of rising and falling with the shallow groundwater level with a device for observing nitrogen and phosphorus elements in the soil during the process of rising and falling of the shallow groundwater level, and the steps are as follows:
[0032] A. Before filling the soil into the soil bucket 1, first measure the soil bulk density of the different soil layers of the soil taken, and at the same time take out the shallow groundwater in the original place of the soil taken, and then layer the soil according to the natural soil layer distribution in ...
Embodiment 2
[0041] Embodiment 2 is an embodiment in which when the groundwater level drops below the bottom of the soil-holding bucket 1, formula II is used to calculate the leaching amount of nitrogen or phosphorus in the soil during the process of rising and falling with the shallow groundwater.
[0042] combine as figure 1 — Figure 5 , Figure 7 The nitrogen or phosphorus element leaching device in the soil during the observation of the shallow groundwater level rise and fall used in this embodiment 2 is the same as that of Example 1, and the nitrogen or phosphorus element leaching in the soil during the shallow groundwater level rise and fall The steps to observe the quantity are as follows:
[0043] A. Before filling the soil into the soil bucket 1, first measure the soil bulk density of the different soil layers of the soil taken, and at the same time take out the shallow groundwater in the original place of the soil taken, and then layer the soil according to the natural soil la...
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