First, increase the temperature. Before garlic enters the green stage, the ground temperature should be increased. The mask on the membrane should be cleared early and the membrane surface should be cleaned to increase the transparency and increase the ground temperature. The damaged plastic film should be promptly repaired in order to increase the effect of heat preservation and warming, and to promote the early return of green film to garlic.
Second, fertilizer and water management. After entering the thrilling solar economy, choose 3 to 5 consecutive days of sunny morning watering topdressing, combined with irrigation watering 20 kg of fertilization and 15 kg of nitrogen and potassium fertilizers. In case of special drought conditions, it may be watered once in late March. In principle, do not water too early, otherwise it may cause disease or secondary growth of garlic. After each watering, the cultivator must be cultivated in time to raise the ground temperature and protect the seedlings. Before and after Ching Ming Festival, if there is a yellow tip on the leaves, a second top-dressing should be carried out. The main quick-acting nitrogen fertilizer is 20 kg per mu, and the number of waterings should be increased in a timely manner. Generally, the watering should be performed once every 10 to 15 days to promote plant growth. .
Third, prevention and treatment of diseases. In spring, the temperature is low and it is prone to cold weather, which affects the normal growth of garlic. At the end of March, after the garlic has returned to the green period, it is recommended to spray bi-protected or brassinolide on sunny afternoons to improve its resilience. Garlic leaf blight and gray mold are common diseases of garlic in spring. In the early stage of disease, the white tip of garlic appeared on the leaf tip of the plant, or a pale brown, oval-shaped lesion appeared on the surface of the leaf. When the disease was severe, the leaves died, the base was rotted, and the garlic plant was lodging. When the diseased plant rate reached 15%, it was sprayed with 50% carbendazim 800 times solution or 20% triadimefon 2000 times solution.
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