How to manage leeks in autumn

Key points 1. Water and fertilizer of leek in beginning of autumn: After beginning of autumn, the weather turned cool, the sunshine was sufficient, the precipitation gradually decreased, the leek grew vigorously and quickly, and the nutrition accumulated to the root system, which was the key period for strong seedlings and strong roots. Therefore, strengthening water and fertilizer management in autumn is beneficial to the rapid growth and nutrient accumulation of Chinese chives. First, ditch along the ridge, and apply 300 ~ 500 kilograms of decomposed bean cake, 750 kilograms of high-quality farmyard manure and 20 kilograms of ternary compound fertilizer per mu. After fertilization, cover the soil and water it twice. Key point 2. Control the length of leek after cold dew: after cold dew, the weather is getting colder and the leek grows slowly. At this time, we should stop watering and topdressing, so that leek nutrition can return to the roots as soon as possible and accumulate nutrients. The third point: Chinese chives hypnosis after the first frost: after the first frost, a northerly wind barrier of 1.3 ~ 1.5 meters is set in front of the south side of the boundary to lower the boundary temperature, force Chinese chives to go to bed early and reduce nutrient consumption; After beginning of winter was covered, the wind barrier tilted to the south by 15 degrees, making the southern boundary a warm boundary. Point 4: Management of leek in beginning of winter: Before covering, clean all the dead leaves and sundries in the border, cut off the dead leek, combine with watering, and apply 20 kilograms of urea per mu. After underwater infiltration, build a small arch shed and cover it with a film grass curtain. Open the straw curtain at 9 o'clock every morning, cover it at 2 o'clock in the afternoon, let it dry for about 5 hours, and then dim. After 3 ~ 5 days, after the leek germinates, the film is removed and sprayed with 25% carbendazim wettable powder or 40% triadimefon aqueous solution to prevent the leek gray mold. After the application, cover the soil for 2 ~ 3 times, with a total thickness of 5 ~ 10 cm. After the leek is unearthed, it is bacon. 165438+1In late October, when the leek grows to 35 cm, cut the first knife and then water and fertilize it.