Recently, when reporters went to the countryside, they discovered that many vegetables on both the front and back sides (ie, the front face and the rear wall waterways) had a heavy incidence, and this phenomenon was particularly serious in greenhouse cucumbers. What causes it? Many vegetable growers are rather stunned. Although some vegetable farmers have found the reasons, they have not prevented the occurrence of vegetable diseases in these two places due to improper measures. Therefore, the reporter believes that it is very necessary to carefully analyze this issue with everyone so that we can find out the reasons in time and take correct and effective preventive measures.
First of all, talk about the cause of the heavy incidence of vegetables on the front face of the greenhouse. This problem is actually an old problem. Many farmers know that this is due to the relatively high soil moisture on the front face. And, in production, most of the vegetable growers also used the film to cover the wet soil before the shed. However, this still cannot effectively reduce the humidity at the front of the shed. What is the reason? During the interview, the reporter found that although the vegetable growers had tight lids on the wet soil in front of the shed, because there were no drainage grooves in the sheds, they did not drain the effluent outside the shed, resulting in dripping. Inflow of vegetables into rows. In this case, the humidity at the front face of the greenhouse is still very large, and it is not difficult to understand how many diseases occur. Therefore, the reporter reminded the vegetable farmers that while the wet soil in the shed was covered with a thin film, a drainage groove must be provided on the soil inside the shed before the shed or directly on the column before the shed with the old water. Set up an aqueduct to drain as much water as possible from the shed. At the same time, it is best to place two membranes here to completely isolate the wet soil from the shed. Only in this way can the humidity at the front face of the shed be effectively reduced, so as to solve the problem of easy occurrence of vegetables here.
Next, we will analyze the cause of the heavy vegetable disease in the back wall waterway. The incidence of vegetables in this area is also heavy due to high humidity. The reporters found that because the upper part of the vegetables is placed on the air outlet, the shed film at the outlet is not a good EVA film, but most of them are ordinary shed films, poor drip resistance, plus the vent often open, Therefore, the water droplets cannot be drained onto the opposite shed film. Eventually, the water droplets can only be dropped into the shed and fall onto the vegetables below. In this case, the vegetables in this area are naturally seriously affected. So, how to solve this problem? The most effective method is to install a rainproof film under the air outlet of the greenhouse to catch the dewdrop that has dripped, and to drain it to the waterway. In fact, many farmers also know this measure, but there are not many applications in production. It is suggested that you should also set up a rainproof membrane at the air outlet. It is not a big investment, but it can play a big role.
In fact, these two measures are not much more costly, can not spend much money, do a good job, both sides of the greenhouse before and after the problem of vegetables easy to resolve.
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