If lighting management turns cloudy after rain, snow, and rain, it is necessary for the plants to have a process of gradually seeing light and gradually warming up. When the sun comes out, the grasshoppers are uncovered and the vegetable farmers do not leave the greenhouse. They always pay attention to the changes in the plants. After lighting, the temperature in the shed quickly rises, the transpiration increases, the ground temperature is low, the root absorption capacity is weak, the absorption and transpiration are unbalanced, and the leaves are wilted. In severe cases, the plants die due to physiological drought. When it is found that the plants are about to wilt, they must lay down the grasshoppers in time, or put a grasshopper one at a time. They should be kept for several days until the plants grow normally, and then they are released according to the temperature. These two methods are called back cover and lid cover respectively.
Water and Fertilizer Management Vegetables that have caused chilling damage can be sprayed with clear water on the leaves before they are exposed on sunny days. After a continuous rainy and snowy day, plants with severe wilting and cessation of growth must undergo nutritional adjustments to the plants. Exogenous phytohormones can be sprayed to promote the development of the shoots. In order to restore the physiological capacity of greenhouses and greenhouse vegetables, it is appropriate to use three-element compound fertilizers of nitrogen, phosphorus, and potassium for melons and solanaceous vegetables, and 1%-2% urea solution for leafy vegetables. Spray 0.3% potassium dihydrogen phosphate and 1% aqueous potassium sulfate solution. However, special attention should be paid to the fact that it cannot be sprayed on rainy or snowy days, so as to prevent the humidity in the shed from rising and inducing disease.
After the soil management weather is clear, cultivating tillage is carried out in places with high humidity to make it breathable, increase the temperature of the ground, and promote the growth of new roots. If the root system has caught cold, after the loose soil is warmed and slowly rooted, the fertilizer water can be poured once, but the groundwater should be used for watering, cold water should not be used on the ground, flood water should not be flooded, and after watering, the cultivator should be placed in time. Fertilizer application of biological fertilizer, soil activation, increase soil organic matter, make the soil become loose, increased air permeability, promote root development.
The installation method of the vehicle-mounted guide plate can be customized, and the most commonly used is the hoop installation.
Hoop installation:
The first type: If your car does not have a pillar, you can install the bracket bar as shown in the picture on the left, and fix the guide plate on the bracket bar with a screw. Fix the guide plate on the bracket bar with a screw. (First put the screw into the guide brand aluminum slot, then pass the screw through the hole of the bracket bar, put the shrapnel, washer, nut, and then tighten the nut).
The second type: install three L-shaped brackets at suitable positions on the roof, install three aluminum bars on the three L-shaped brackets respectively, punch holes in the aluminum bars that are aligned with the L-shaped brackets, and then fix the aluminum bars on the On the L-shaped bracket (first pass the screw through the holes on the aluminum bar and the L-shaped bracket, insert the shrapnel, washer, and nut, and then tighten the nut).
The third type: install two aluminum strips directly on the roof of the car, punch two holes in the appropriate position of the aluminum strip to facilitate the installation of the aluminum strip on the car, fix the aluminum strip with screws, and then fix the guide plate with a hoop On the aluminum bar. Pass the end of the screw with a nut through the aluminum slot on the back of the guide plate, and then align the hoop around the aluminum bar with the screws on the aluminum slot, that is, put the holes at both ends of the hoop into the two sides of the aluminum bar. On the screw, screw on the shrapnel, washer, and nut, and then tighten it.
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