The rain and snow conditions in the previous period brought some influence on the cultivation of vegetables in winter greenhouses. In this winter, what problems need to be paid attention to when managing greenhouses?
Recently, the reporter followed the agricultural experts to the vegetable greenhouses in Xiaogucheng Village, Rizhao Street, Donggang District, and learned about the impact of rain and snow weather on the farmers. The vegetable farmer told reporters that it is now the season for large quantities of cucumbers in greenhouses. According to the normal year, it should be picked every two days. Each time it can pick 200 kilos, but it is affected by the continuous rainy days and cooling, some days ago. Kung Fu only harvested 100 kilos. Although the price of cucumbers has been high recently, the output has not been a headache for farmers.
After questioning, agricultural experts helped him find the crux of a significant reduction in cucumber production. In order to maintain the greenhouse temperature on rainy days, the original vegetable farmer had not opened the straw curtain for three consecutive days, resulting in a serious shortage of lighting in the shed.
Liu Xianhai, head of the Economic Crops Station of the Municipal Bureau of Agriculture, has to leave the curtain open on a cloudy day. It does not necessarily have to have a sun in winter, but also opens the curtain when there is no sun.
In another tomato greenhouse, the flowers opened in the past few days were not fruited, and the leaves appeared rotten and some were infected with nematodes.
Vegetable growers: All of this is bad. It's because of not seeing the sun. Because it pollinates parts of the sun, you don't have to have gray mold.
This vegetable farmer also covered the straw curtain in the rainy weather, resulting in insufficient lighting in the greenhouse, and the watering in the shed adopted a backward flood irrigation method, resulting in excessive humidity in the soil and air, causing the tomato to become infected with gray mold and nematodes. disease. Experts cautioned that the key to pests and diseases in vegetable greenhouses is prevention. Once infected, it will be difficult to eradicate the disease, and even large-scale infection will occur, affecting the quality and yield of vegetables. .
Liu Xianhai, head of the Economic Crops Station of the Municipal Bureau of Agriculture, said that if there is no sun, it wouldn't matter if you open the curtain and some scattered light. If the light can still look at people, it will be good for it. Covering the curtain is very dark inside, and it will be broken after a long time. Another winter, pouring small water, pouring ground, a small pouring, preferably drip irrigation.
The reporter followed the experts and visited several vegetable greenhouses. It was discovered that there were many vegetable farmers in the surrounding areas that had the misunderstanding of overheating and neglecting daylight. In fact, for greenhouse vegetables, both direct light and scattered light have multiple functions such as promoting photosynthesis, lowering humidity, increasing temperature, sterilization, and prevention of diseases, and the amount of light collected in the shed should be increased as much as possible. In addition, we should also pay attention to ground maintenance, disease prevention and pest control. We recommend the use of new technologies and new equipment such as drip irrigation and electric roller shutters. Because of the high standards of management, it will bring high quality and high returns.
Recently, the reporter followed the agricultural experts to the vegetable greenhouses in Xiaogucheng Village, Rizhao Street, Donggang District, and learned about the impact of rain and snow weather on the farmers. The vegetable farmer told reporters that it is now the season for large quantities of cucumbers in greenhouses. According to the normal year, it should be picked every two days. Each time it can pick 200 kilos, but it is affected by the continuous rainy days and cooling, some days ago. Kung Fu only harvested 100 kilos. Although the price of cucumbers has been high recently, the output has not been a headache for farmers.
After questioning, agricultural experts helped him find the crux of a significant reduction in cucumber production. In order to maintain the greenhouse temperature on rainy days, the original vegetable farmer had not opened the straw curtain for three consecutive days, resulting in a serious shortage of lighting in the shed.
Liu Xianhai, head of the Economic Crops Station of the Municipal Bureau of Agriculture, has to leave the curtain open on a cloudy day. It does not necessarily have to have a sun in winter, but also opens the curtain when there is no sun.
In another tomato greenhouse, the flowers opened in the past few days were not fruited, and the leaves appeared rotten and some were infected with nematodes.
Vegetable growers: All of this is bad. It's because of not seeing the sun. Because it pollinates parts of the sun, you don't have to have gray mold.
This vegetable farmer also covered the straw curtain in the rainy weather, resulting in insufficient lighting in the greenhouse, and the watering in the shed adopted a backward flood irrigation method, resulting in excessive humidity in the soil and air, causing the tomato to become infected with gray mold and nematodes. disease. Experts cautioned that the key to pests and diseases in vegetable greenhouses is prevention. Once infected, it will be difficult to eradicate the disease, and even large-scale infection will occur, affecting the quality and yield of vegetables. .
Liu Xianhai, head of the Economic Crops Station of the Municipal Bureau of Agriculture, said that if there is no sun, it wouldn't matter if you open the curtain and some scattered light. If the light can still look at people, it will be good for it. Covering the curtain is very dark inside, and it will be broken after a long time. Another winter, pouring small water, pouring ground, a small pouring, preferably drip irrigation.
The reporter followed the experts and visited several vegetable greenhouses. It was discovered that there were many vegetable farmers in the surrounding areas that had the misunderstanding of overheating and neglecting daylight. In fact, for greenhouse vegetables, both direct light and scattered light have multiple functions such as promoting photosynthesis, lowering humidity, increasing temperature, sterilization, and prevention of diseases, and the amount of light collected in the shed should be increased as much as possible. In addition, we should also pay attention to ground maintenance, disease prevention and pest control. We recommend the use of new technologies and new equipment such as drip irrigation and electric roller shutters. Because of the high standards of management, it will bring high quality and high returns.
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