In recent years, with the increase in the depth of excavation in greenhouses, soil collapse at the front face of greenhouses has become more common.
The reporter interviewed a number of experienced farmers on this basis. According to these farmers, the main reason for soil collapse at the front face of the greenhouse was the infiltration of rain, snow, or dew on the shed film where the water was contaminated for a long time. Here, the soil is very weak, and collapse is inevitable. So, how to solve this problem? The reporter summarized measures to prevent soil collapse at the front face of greenhouses for reference by farmers.
First of all, the ground outside the shed should be high in the north and south. In order to allow rainwater and snow water to flow smoothly from here, after the farmers have built their sheds, they must turn the soil here into high north and south low. In this way, after rain and snow, it is impossible for rainwater and snowwater to stay and infiltrate, and the impact on the soil at the front face of the greenhouse is reduced.
Second, cover the film on the ground outside the shed. In order to avoid the infiltration of rain and water, it is better to cover the old shed film on the premise that the ground is formed to be high in the north and lower in the south, which is more safe. In particular, a shed with a cold-proof ditch in front of the shed is provided. If the protection is not good here, it will lead to seepage of rain and water. This will not only prevent the cold-proof ditch from chilling, but also easily exacerbate soil collapse at the shed front face. Therefore, it is necessary to lay a thin film on the soil outside the shed.
The second thing is to pay attention to the flow of droplets gathered at the front of the greenhouse to other places. The soil on the inside of the front face of the greenhouse is the place where the dewdrops on the shed film confluence, which will cause a relatively high humidity here, and it is more likely to cause the soil to collapse there and induce the disease. Therefore, the vegetable farmers must take measures to drain the flow of confluence to other places. For example, it is a good idea to use an old water pipe to make the drainage of air channels. This paper has been reported many times before.
In addition, the soil growers on the inside of the front face of the greenhouse should be dressed into slopes. If they are set vertically, they can easily collapse.
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