Frozen damage prevention technology of rapeseed
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Gully ditching, earthworms, roots and snow after the timely cleaning of the ditch, gutters, gutters, eliminate snow, reduce the humidity in the field, and promote rapeseed growth. Use the roots of the soil to clean the soil and reduce the damage to the root system caused by freezing damage.
Severely frozen leaves, early pods, and early flowers that have been frozen during the harvest should be removed on a sunny day. Broken leaves, broken branches and dead leaves, pods and branches should not be removed on rainy days so as not to cause wound rot. Immediately after removal, quick-acting fertilizers were applied to supplement the nutrients in the plants and promote the restoration of growth. The lighter blocks of frozen leaves should be treated with appropriate fertilizers to promote the recovery of growth.
After the application of fertilizer, the application of urea is 5-7 kg/mu, or 50 g of borax, 100 g of potassium dihydrogen phosphate, 50% carbendazim WP, 150 g of water, and 50 kg of water to spray fertilizer. Prevention and treatment of Sclerotinia sclerotiorum and promotion of the role of the base branch. The frozen field of rapeseed leaves is applied with 3 to 5 kilograms of urea per acre to promote the restoration of growth. Broad-grained, vigorously growing plots were sprayed with 15% paclobutrazol wettable powder 50 grams of water and 50 kg of water per acre to mitigate the extent of frost damage. Where conditions permit, we can spread manure such as plant ash.
The wounds produced by spraying or preventing oilseed rape that are frozen or harvested are prone to infect a variety of pathogens and cause diseases. Therefore, carbendazim, thiophanate-methyl, thiophene manganese zinc and other drugs should be promptly applied for prevention.
Change the crops of other crop rape seedlings that are on the verge of death and are on the verge of harvesting, and reduce losses by early deforestation, replanting of potatoes and fast-growing vegetables.