After harvesting the yellow daylily in the fall, timely management of the field can lay a foundation for the next year's high yield. The management points are:
The treatment of dead leaf stalks at the end of August should be harvested all over the country. At this time, the leaves and stems of the day lily will slowly wither. It is best to pull out the stems of the dead leaves. When the firewood is burned, if the hands are Not enough to wait until the stems and leaves are dried and burned directly in the vegetable field. Don't worry about burning the seedlings.
Deep excavation and deep tillage in autumn can deepen and mature the tillage layer, enhance soil permeability and improve soil fertility. Deep tillage should be carried out after the harvest of the flower buds, and should not be late.
Select the ground when the soil is dry and dry, with a depth of 25 to 30 cm. Cut off the root system of shrinking and aging, and promote the new roots of autumn seedlings. For day lily planted within 3 years, you can only dig 15 to 20 cm between rows to prevent damage to the roots.
The tube seedlings of the autumn seedlings are germinated in October and are the second growth in the year. Through the growth of autumn seedlings and nutrient accumulation, to promote the formation of axillary buds, lay the foundation for the growth of spring buds in the coming year.
Combined with deep-turning the soil, urea can be applied 7.5 to 10 kg per acre, 25 to 30 kg of superphosphate and 150 kg of water, fully mixed and then drenched. Cover the soil with 3 to 5 cm thick after fertilization to avoid loss of fertilizer.
Prevention and control of pests and diseases Daylily is prone to the damage of red spiders, small tigers and rust. Red spiders and small ground tigers can be controlled with 1000 times of dimethoate or 500 times of phoxim, 75 kg per acre, and sprayed every 10 days. Rust can be sprayed 2 to 3 times with 500 to 1000 times of powder rust, once every 10 to 15 days, 50 to 75 kg per acre.
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