Spring shelter wind damage
Second, we must pay attention to regular inspections of greenhouses to eliminate wind hazards. One is to inspect the lamination lines and re-tighten the loose lamination lines; the older or broken laminating lines should be replaced promptly. The second is to check if the film is damaged. If it is found damaged, it should be repaired as soon as possible. The third is to focus on fixing the slope grasshoppers in the greenhouse. During the production, when the farmers stopped laying grasshoppers, they always worried that the grasshoppers were blown by the wind, so they chose to use floating membranes to cover the grasshoppers. However, the floating membranes covered about 4/5 of the total grasshoppers. That is to say, the grasshoppers on the slopes behind the greenhouses are covered incompletely by the floating membranes. Therefore, on the basis of covering the floating membranes, it is necessary to fix the grasshoppers on the back slope of the greenhouse. Method: Pick a No. 6 steel wire, pull it in the back shed 20 centimeters in the back slope, and both sides are fixed on the falling stone below the east-west gable, and then tighten with a tight threader. Or every 10 meters on the back slope of the greenhouse, press the fixed steel bar with stones to prevent the steel bar from becoming loose and the grasshopper is blown away by the wind. Fourth, we must set up a "back cover" for wind protection in greenhouses. The so-called windproof rear cover is a piece of membrane with the same length as the floating membrane and a width of about 1m at the back slope of the greenhouse. It is set at the top of the greenhouse by the length of the east and west, and covers one side of the greenhouse film (about 20 cm in width). Compaction. After putting down the grasshopper and covering the floating membrane, cover the floating membrane with this membrane to prevent the north wind from blowing into the floating membrane and avoid damaging the floating membrane. The vegetable farmers called the film a windproof back cover, and it is not costly to set the windproof back cover, but the windproof effect is very good.
Bee Pollen comes from
nature, is the bee from the flowers (nectar plants and pollen plants)
flowers collected in the pollen grains, and joined the special glandular
secretions (nectar and saliva) mixed into an irregular Flat round shape. Bee
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