Field Management of High yield of Lily in topdressing and drainage Control of Diseases and insect pests

Lily fertilization

1. Topdressing and drainage: during the overwintering period of lilies, wax fertilizer is applied once before freezing, 20 kg of urea and 30 kg of potassium chloride are used per mu, combined with cleaning drains to cultivate soil and protect roots, so as to make the gutters unobstructed, prevent stagnant water in the field, and reduce the rot of lilies due to wet damage. Before emergence in spring, topdressing is applied twice, with 50 kg of ternary sulfur compound fertilizer or 2.5 kg of sulfur per mu. After emergence, the grass is covered in the field to prevent soil consolidation and play the role of moisturizing, fertilizing and cooling.

two。 Plastic film mulching cultivation: covering lily with plastic film for 30 days in early spring could shorten the emergence period of lily by 7 days and 15 days and increase yield by 12%.

3. Picking the top of the stem at the right time: according to the number of leaves, it is best to take off the top when the lily has grown more than 60 leaves and the daily average temperature is not more than 23 ℃. The experimental results show that the yield of centering is higher than that of non-coring, and the yield of coring in the suitable period is higher than that in late, and the more leaves are retained in the suitable period, the greater the yield is.

4. Prevention of early withering of green leaves: to prolong the life of functional leaves, the bulbs of green leaves are large and the yield is high in the late growth stage of lilies. For this reason, when bulb expansion slows down in late June, 0.2% potassium dihydrogen phosphate plus 0.3% 0.5% urea is used to apply foliar fertilizer once.

5. Pest control: within 1-2 days after sowing, spray 50-80 grams of diachlor per mu to prevent weeds. The growth period of lily. The main diseases and insect pests are ground tigers, aphids, virus diseases and so on. At the initial stage of the onset of the virus disease, 1.5% Zhixianling emulsion was sprayed 1000 times, or antiviral agent 1 was sprayed 1000 times, once every 10 days, for 2 times. After emergence, aphids are sprayed with 1500 times of methamidophos EC, and 40% omethoate can also be used to control them. In late April, 6-8 kg of carbofuran or 0.5 kg of phoxim were sprinkled with poisoned soil to kill insects underground.