In the management of winter vegetables, wind and snow disasters are often encountered. The greenhouses are damaged to some extent, or collapsed, or the sheds are damaged, resulting in serious losses. Therefore, preparing before the arrival of Feng Shui and taking preventive measures is the key to avoiding major losses. To start with the details, carefully check the conditions of the booth and take appropriate preparations accordingly:
First, check and reinforce the facilities in the greenhouse to ensure the security of the booth
Checking the greenhouse facilities includes checking the condition of the shelter film, whether the scaffolding is firm, the insulation condition of the shelter, the fastening of the lamination line, the maintenance condition of the back wall, the condition of the shutter, etc. Once the problem is discovered, it is necessary to take timely measures.
1. Check whether the film is damaged
Focus on the inspection of the front face of the greenhouse and the outlet of the greenhouse, including holes in bamboo poles, iron bars, and birds. Do not underestimate these small mouths. When the wind blows, the loopholes will gradually expand. The cold wind will pour into the shed, and the cold will cause the vegetables to produce less heat. The shed film will be blown off, the greenhouse will be destroyed and the vegetables will be produced. Therefore, it is advisable to carefully inspect the film around the greenhouse to ensure that the soil is tightly packed and that the holes in the shed film are repaired with tape.
2. Check if the scaffold is firm
For old sheds that have been planted for many years, the bamboo poles are old and the columns are skewed. They are poorly fastened and can easily collapse after being hit by heavy snow. A steel pipe can be used as a temporary brace at the front face of the greenhouse, supported obliquely to the south, and the supporting point is at the intersection of the frame and the column at the shed face, and one for each room. This reinforcement can greatly increase the bearing capacity at the front face of the greenhouse and reduce the chance of the greenhouse being collapsed. When the columns in the middle of the shed are reinforced, they can be turned into waste, and the broken old columns are bundled in the ground with the original columns. At the same time, they are fixed in triangles with inclined sticks to increase their firmness. Fix a column to make it a support point, greatly improving the pressure resistance.
3. Check whether the shed is warm
The settings of the entrances to the sheds in different areas are different, some are located at the front face, some are located at the back of the gables, and some are located at the back wall. If the shed is located at the front face, it is recommended to cover the outside of the door with a haystack or insulation to reduce the spread of heat. If the shed is at the back of the gable, you can set the insulation curtains on both sides of the channel; On the back wall, it is better to build a shed hut, which can be used as a storage room and avoid cold wind blowing into the shed.
4. Check whether the film line is tight
When the laminating line is used for a long time, it will be aged and stiff. When the wind is blown, the laminating line is subjected to excessive pressure and is easily broken. This causes the shed film to loosen, and the wind is liable to drum lift the shed film, causing huge losses. In addition to this reason, the rusting or loosening of anchors can also lead to the above-mentioned consequences, and vegetable farmers should pay attention when checking.
5. Check the condition of the back wall maintenance
This is easily overlooked by vegetable farmers. In fact, the back wall of the greenhouse is on the back of the sun, seeing less light, the snow melts slowly after snowing, and the melted snow water infiltrates into the back wall of the greenhouse, which will inevitably affect the firmness of the back wall and reduce the temperature of the greenhouse. Therefore, the maintenance work of the back wall of the greenhouse is also very important. The back wall can be covered with waste plastic film and non-woven fabrics. In the summer, it can prevent rainwater erosion, weeds grow, winter can prevent snow water, and improve the insulation effect of the back wall.
Second, strengthen the greenhouse insulation work
When the snow storm hits, the outside temperature is lowered, and under the premise of ensuring the safe and firm shed, the greenhouse insulation work must be highly valued. The shed did not collapse, but the temperature of the shed was not guaranteed, and the vegetables were frozen. It could not be recovered for a long time. Insulation measures could be taken in advance, such as covering two layers of grass worms and adding a layer of film, ridging the film and covering the “shed in the shed†and the shed. For the first time, farmers can use their own skills to learn from the past, such as covering the grass, burning the corn cob, or using electric wires. In addition, under cloudy snow weather, the greenhouse insulation can start from other measures.
1. Skillfully set up a film to strengthen insulation
One night before the blizzard weather arrives, the vegetable peasants will be able to cover the sheds early. How to save time and effort to cover the film, there are many doors. Usually, the vegetable farmers pull down a whole piece of plastic film from the east-west wall of the greenhouse to the front face of the greenhouse, or pull it up from the front face of the greenhouse to the wall of the greenhouse. The weather is often before the arrival of heavy snowfall. Large, it is very difficult to pull the film. The method is to divide a whole piece of film into two pieces. A nylon rope is pressed into the film along the mucous membrane. When the film is covered with a film, the film is pulled directly from both sides of the gable to the middle of the greenhouse. Lay the pressure, and then press the film on the front face and the back wall of the greenhouse with a half-full sandbag. Press the bag every 5 meters to ensure that the wind will not be poured into the film.
When selecting the film, it is better to choose black and absorb heat. According to past years of experience, after the snow, the frozen water on the film is not easy to melt, it is difficult to peel off the film, and it is easy to cause film damage. It is better to choose a black film. After the sun comes out, it shines on the film. The black film Warming faster than white film, so snow melts faster.
2. Add straw reactor to increase ground temperature
2. Add straw reactor to increase ground temperature
The corn stalks are piled in rows between the cucumbers, and the root bait and high-fertility microbial agents are sprayed at the same time. The ground temperature is increased by the heat released by the microbial fermentation activity. This technology is called a straw reactor. At present, the technology is widely used and has a significant effect on raising the ground temperature in the deep winter. A vegetable farmer once tried and tested, and after setting up a straw reactor, the ground temperature was 2°C~3°C higher than that set. For thermophilic vegetables such as cucumbers and peppers, it is important to increase the ground temperature in the winter to 2°C to 3°C, which can promote the growth of the root system and increase the overall yield.
3. Improve the cold resistance of vegetables
To improve the cold resistance of crops and avoid the occurrence of chilling and freezing injury, we can start from two aspects:
(1) Conservation Roots
The roots of plants are like the heart of a person. If the heart function is weak, the body is poor. If the roots of the plants are weak, the supply of water and nutrients is limited, and the plants are hungry all day long. How can there be strength to protect against the disease? Therefore, the cultivation of vegetables in winter greenhouses is a core issue in management. Conservation of the root system does not happen overnight, but runs through the entire growing season of the plant. It is necessary to regulate and control the suitable greenhouse temperature and humidity environment, water and fertilizer supply, and plant adjustments.
(2) Curing the leaves
Snowy weather has a low temperature in the shed, which affects the absorption of mineral nutrients by the roots, resulting in the lack of inorganic nutrients and weak photosynthetic enzyme activity. The light in the shed is weak, the energy is insufficient, the photosynthesis of the plants is limited, and the organic nutrition is insufficient. In the absence of organic nutrients, the disease resistance of the plant itself can be imagined. Before the arrival of heavy snowfall, spray full of chitin, alginic acid, photosynthetic power, and multi-nutrition foliar fertilizers to supplement leaf and much-needed trace elements and organic nutrients to alleviate the shortage of nutrients and improve the resistance of the leaves. Cold and drought resistance.
First, check and reinforce the facilities in the greenhouse to ensure the security of the booth
Checking the greenhouse facilities includes checking the condition of the shelter film, whether the scaffolding is firm, the insulation condition of the shelter, the fastening of the lamination line, the maintenance condition of the back wall, the condition of the shutter, etc. Once the problem is discovered, it is necessary to take timely measures.
1. Check whether the film is damaged
Focus on the inspection of the front face of the greenhouse and the outlet of the greenhouse, including holes in bamboo poles, iron bars, and birds. Do not underestimate these small mouths. When the wind blows, the loopholes will gradually expand. The cold wind will pour into the shed, and the cold will cause the vegetables to produce less heat. The shed film will be blown off, the greenhouse will be destroyed and the vegetables will be produced. Therefore, it is advisable to carefully inspect the film around the greenhouse to ensure that the soil is tightly packed and that the holes in the shed film are repaired with tape.
2. Check if the scaffold is firm
For old sheds that have been planted for many years, the bamboo poles are old and the columns are skewed. They are poorly fastened and can easily collapse after being hit by heavy snow. A steel pipe can be used as a temporary brace at the front face of the greenhouse, supported obliquely to the south, and the supporting point is at the intersection of the frame and the column at the shed face, and one for each room. This reinforcement can greatly increase the bearing capacity at the front face of the greenhouse and reduce the chance of the greenhouse being collapsed. When the columns in the middle of the shed are reinforced, they can be turned into waste, and the broken old columns are bundled in the ground with the original columns. At the same time, they are fixed in triangles with inclined sticks to increase their firmness. Fix a column to make it a support point, greatly improving the pressure resistance.
3. Check whether the shed is warm
The settings of the entrances to the sheds in different areas are different, some are located at the front face, some are located at the back of the gables, and some are located at the back wall. If the shed is located at the front face, it is recommended to cover the outside of the door with a haystack or insulation to reduce the spread of heat. If the shed is at the back of the gable, you can set the insulation curtains on both sides of the channel; On the back wall, it is better to build a shed hut, which can be used as a storage room and avoid cold wind blowing into the shed.
4. Check whether the film line is tight
When the laminating line is used for a long time, it will be aged and stiff. When the wind is blown, the laminating line is subjected to excessive pressure and is easily broken. This causes the shed film to loosen, and the wind is liable to drum lift the shed film, causing huge losses. In addition to this reason, the rusting or loosening of anchors can also lead to the above-mentioned consequences, and vegetable farmers should pay attention when checking.
5. Check the condition of the back wall maintenance
This is easily overlooked by vegetable farmers. In fact, the back wall of the greenhouse is on the back of the sun, seeing less light, the snow melts slowly after snowing, and the melted snow water infiltrates into the back wall of the greenhouse, which will inevitably affect the firmness of the back wall and reduce the temperature of the greenhouse. Therefore, the maintenance work of the back wall of the greenhouse is also very important. The back wall can be covered with waste plastic film and non-woven fabrics. In the summer, it can prevent rainwater erosion, weeds grow, winter can prevent snow water, and improve the insulation effect of the back wall.
Second, strengthen the greenhouse insulation work
When the snow storm hits, the outside temperature is lowered, and under the premise of ensuring the safe and firm shed, the greenhouse insulation work must be highly valued. The shed did not collapse, but the temperature of the shed was not guaranteed, and the vegetables were frozen. It could not be recovered for a long time. Insulation measures could be taken in advance, such as covering two layers of grass worms and adding a layer of film, ridging the film and covering the “shed in the shed†and the shed. For the first time, farmers can use their own skills to learn from the past, such as covering the grass, burning the corn cob, or using electric wires. In addition, under cloudy snow weather, the greenhouse insulation can start from other measures.
1. Skillfully set up a film to strengthen insulation
One night before the blizzard weather arrives, the vegetable peasants will be able to cover the sheds early. How to save time and effort to cover the film, there are many doors. Usually, the vegetable farmers pull down a whole piece of plastic film from the east-west wall of the greenhouse to the front face of the greenhouse, or pull it up from the front face of the greenhouse to the wall of the greenhouse. The weather is often before the arrival of heavy snowfall. Large, it is very difficult to pull the film. The method is to divide a whole piece of film into two pieces. A nylon rope is pressed into the film along the mucous membrane. When the film is covered with a film, the film is pulled directly from both sides of the gable to the middle of the greenhouse. Lay the pressure, and then press the film on the front face and the back wall of the greenhouse with a half-full sandbag. Press the bag every 5 meters to ensure that the wind will not be poured into the film.
When selecting the film, it is better to choose black and absorb heat. According to past years of experience, after the snow, the frozen water on the film is not easy to melt, it is difficult to peel off the film, and it is easy to cause film damage. It is better to choose a black film. After the sun comes out, it shines on the film. The black film Warming faster than white film, so snow melts faster.
2. Add straw reactor to increase ground temperature
2. Add straw reactor to increase ground temperature
The corn stalks are piled in rows between the cucumbers, and the root bait and high-fertility microbial agents are sprayed at the same time. The ground temperature is increased by the heat released by the microbial fermentation activity. This technology is called a straw reactor. At present, the technology is widely used and has a significant effect on raising the ground temperature in the deep winter. A vegetable farmer once tried and tested, and after setting up a straw reactor, the ground temperature was 2°C~3°C higher than that set. For thermophilic vegetables such as cucumbers and peppers, it is important to increase the ground temperature in the winter to 2°C to 3°C, which can promote the growth of the root system and increase the overall yield.
3. Improve the cold resistance of vegetables
To improve the cold resistance of crops and avoid the occurrence of chilling and freezing injury, we can start from two aspects:
(1) Conservation Roots
The roots of plants are like the heart of a person. If the heart function is weak, the body is poor. If the roots of the plants are weak, the supply of water and nutrients is limited, and the plants are hungry all day long. How can there be strength to protect against the disease? Therefore, the cultivation of vegetables in winter greenhouses is a core issue in management. Conservation of the root system does not happen overnight, but runs through the entire growing season of the plant. It is necessary to regulate and control the suitable greenhouse temperature and humidity environment, water and fertilizer supply, and plant adjustments.
(2) Curing the leaves
Snowy weather has a low temperature in the shed, which affects the absorption of mineral nutrients by the roots, resulting in the lack of inorganic nutrients and weak photosynthetic enzyme activity. The light in the shed is weak, the energy is insufficient, the photosynthesis of the plants is limited, and the organic nutrition is insufficient. In the absence of organic nutrients, the disease resistance of the plant itself can be imagined. Before the arrival of heavy snowfall, spray full of chitin, alginic acid, photosynthetic power, and multi-nutrition foliar fertilizers to supplement leaf and much-needed trace elements and organic nutrients to alleviate the shortage of nutrients and improve the resistance of the leaves. Cold and drought resistance.
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