How to manage the autumn onions? What should be paid attention to in the autumn management of green onions?
How to manage the autumn onions? The management of green onion should pay attention to fertilizer application, water management, root cultivation, pest control and timely harvesting. The specific small series will be explained below, and interested friends can also pay attention to Hui Nong network, learn or learn more. Agricultural knowledge.
1. Replenishing fertilizer: Because the green onion grows long and requires a large amount of fertilizer, it is necessary to apply base fertilizer during the planting process. When the base fertilizer is insufficient, it is necessary to apply top dressing. At the same time, the fertilizer must be supplemented. Fertilizer application should be rationally matched with nitrogen, phosphorus and potassium. The ratio of fertilization should be 4:3:3.
2, water management: green onion growth period, the field must maintain a certain degree of humidity, especially in autumn and winter green onions into a strong growth period, but also need to ensure adequate water supply.
3, å£…æ ¹åŸ¹åœŸ: The green onion roots are combined with artificial and mechanical, and need to be soiled 3-5 times to ensure that the white onion stems reach 30 cm or more. Each time the green onion is cultivated, the ground stem is 8-10 cm. The soil is required to be transplanted to the fork, and the soil layer is required to be tight without leaving a gap.
4. Pest control
(1) The diseases of green onion mainly include: downy mildew, soft rot, purple spot disease, etc. Prevention and control measures of green onion disease: downy mildew is controlled by 72% gram of 600 times spray; soft rot can be sprayed with 20% borneol 700 times Prevention and treatment; purple spot disease is controlled by 64% anti-virus 矾 800 times spray, once a week, continuous spraying 3-4 times.
(2) The main onion pests are: Liriomyza sativae, onion horse, onion, whitefly, etc.; onion pest control measures: 75% chlorpyrifos 2000-3000 times liquid spray for spotted fly control; % Akthai 2500 times liquid foliar spray; onion can be controlled with 40% phoxim 500 times.
5, timely harvest: the best harvesting period of green onion is 150-180 days after planting. When harvesting, first use the iron shovel to dig the soil on the side of the green onion, then gently remove the green onion and arrange the green onion.
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