Rain and snow weather can easily lead to frostbite. How to protect crops when snowstorm strikes?

Off-season greenhouse vegetables are the main source of winter vegetables in our lives, especially in Shandong and Anhui. At the same time, strawberry cultivation is also a greenhouse cultivation. Planting fruits and vegetables in greenhouse is conducive to their rapid growth, more conducive to peak listing, and can sell at a good price, so many farmers choose to grow vegetables in greenhouse. So how should we manage the external structure of the greenhouse and the crops in the greenhouse when the snowstorm comes?

1. Clear the snow to prevent the shed from collapsing.

Measures taken before snowfall: Pay attention to the weather forecast in time before snowfall, understand the snowfall situation, and strengthen the scaffolding structure. There is a vegetable shed with columns. Check whether the column is upright and whether the connection between the column and bamboo pole or steel pipe is firm. If it is loose, it should be re-bound in time; But in general, the steel frame structure is stronger and more resistant to pressure! In addition, some greenhouses can also be covered with straw blankets in advance, which is conducive to snow removal and warmth!

Measures to be taken after snowfall: Pay attention to the structure of greenhouse and the snow outside the greenhouse after snowfall. Generally, we should pay attention to the carrying capacity of the greenhouse when sweeping snow. Membrane method protects greenhouse and reduces losses! Farmers' friends should never worry about the loss of vegetables in the local area and the loss caused by the risk of collapse of greenhouses!

2. Heating and freezing injury in the shed

Greenhouse vegetables are planted out of season, especially when the temperature is low when it snows and melts. We must do a good job in heat preservation, heating and antifreeze of greenhouse vegetables! At the same time, we should also do some light supplement work for vegetables to promote normal photosynthesis of vegetables! Every time the temperature in the greenhouse increases by 1 degree, the air humidity in the greenhouse can be reduced by 3-5%. Generally, heat preservation measures can be taken; The shed is covered with thermal insulation layer, and a small arch shed is built in the shed. Temporary heating facilities such as heaters, electric fans, electric lights, yuba and stoves can also be added to protect crops in the shed. Emergency heating shed. However, it is absolutely not recommended to use an open flame to avoid gas poisoning or fire! In addition, pay attention to high humidity when using electrical appliances to avoid short circuit.

Two. crime

1. Dredge ditches, drain water and prevent stains.

For wheat planting, we have a saying: "Whether the wheat is harvested depends on three ditches", so it is very important whether the three ditches of wheat are unblocked; Farmers must clean up the three ditches before it snows, so as to avoid the blockage and collapse of the ditch system caused by melting snow. There was serious water accumulation, and finally the temperature dropped and the wheat was frozen. At the same time, it should be noted that excessive water accumulation will seriously affect the growth of wheat roots, hinder the normal nutrient transportation of wheat, and aggravate the occurrence of wheat sheath blight and root rot; In the field, there are several more yellow seedlings! So when it snows, you must clear the ditch and row the wheat!

2, timely topdressing to promote healthy seedlings.

For local crop wheat, the size of wheat population is different due to different regions, different sowing dates and different water conditions. Therefore, it is necessary to combine topdressing in the snow to promote strong seedlings and transformation and upgrading of wheat. At this time, it is necessary to apply fertilizer. But we must pay attention to topdressing: don't sprinkle it when it snows, but after the snow melts, usually after the snow melts, to avoid the loss of fertilizer caused by the melting of snow, and fertilization can also increase fertility. Surface temperature, avoid wheat freezing injury!