Clean snow. After rain and snow and freezing weather, some farmers did not clean the snow in time, resulting in more snow accumulating in the shed, causing the vegetable greenhouses to fall or fall. Therefore, to learn lessons, as long as snow is encountered, even deeper and midnight, the snow on the shed film must be cleaned immediately.
Repair the shed. After the shed collapses, it is necessary to pay close attention to the time to repair and reinforce the skeleton and the shed film, add wood support in the shed, reinforce the pillars in the shed, and reinforce the film line. The bottom of the greenhouse must be soiled with mud. The membrane holes must be filled with tape. Small holes can be used to wet the micro-films with water.
Ditch drain. When the snow outside the shed begins to melt, it is necessary to clear the ditch to drain the snow water in time. It is best to clear the snow from the membrane on both sides of the shed to prevent the snow from melting through the shed feet and into the shed, not only Take heat, and increase humidity.
Warmer and warmer. Temporary warming measures are taken to properly control the temperature in the shed, such as light bulbs, heating, and temporary combustibles. However, attention must be paid to the safety of electricity use. Burning materials should be prevented from occurring. To increase the temperature and prevent freezing, a small shed can be buckled in a large shed, arched with a thin bamboo arch, covered with a double-layered film, or a shade net can be placed on the small shed film. Conditions can also be hung under the film under the film of two films, about 33 cm away from the top film, with a hook can be hooked.
Improve lighting. During the day, cover and curtains should be removed as soon as possible to increase daylighting. However, attention should be paid to the method of uncovering the cover when uncovering the cover. It must not be fully exposed at one time to prevent the snow from becoming clear after the snowfall. Water causes acute flash seedlings to wither. If conditions permit, the breeding nursery room is best to use a new film or a non-drip film, better light transmission.
Ventilation and humidity. At 1 to 2 noon, try to uncover the door for an hour or so. Exhale the exhaust gas, reduce the stagnant water on the shed film, and reduce the humidity. When the humidity of the vegetable seedlings in the greenhouse is too high, we can use plant ash or dry fine soil to spread it on the leaf surface. Then use the chicken feather brush to exhaust the leaves. The greenhouse door should be provided with a 30 to 40 cm wind deflector to prevent foot winds and freeze the crops on the door.
Freezing treatment. After freezing damage to vegetables in damaged sheds in greenhouses, reasonable application of foliar fertilizers is required. Crops and seedlings that have been severely chilled and severely chilled are prohibited from using growth-promoting hormones, and 300 times liquid rice vinegar can be sprayed (50 ml to 15 Kilograms of water), potassium dihydrogen phosphate 30g, or 1% sucrose + 1% rice vinegar solution sprayed foliar increase vegetable resistance.
Fertilizer management. After thawing after the snow, the plants recovered, and after sunny weather, the topdressing water was used to promote growth depending on the growth of the vegetables. Foliage spraying a broad-spectrum of thiophanate-methyl, carbendazim, chlorothalonil and other broad-spectrum agents (specially used in the shed, where the humidity is too high, sprinkle the original powder, that is, wrap the original drug in cloth, and tie it with bamboo vines. In order to control the occurrence of diseases such as gray mold, sclerotinia, and blight.
In addition, we must pay close attention to the changes in the weather, listen to weather forecasts in a timely manner, and prevent the recurrence of rain and snow. In particular, when visiting relatives and friends during the Spring Festival, we must not forget that we must have someone â€œsee the greenhouse on a third dayâ€.
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