Planting techniques of spring wheat replanting Welsh onion

Output and output value

Green onions generally produce 2000-4000 kg per mu, with an output value of 400,800 yuan per mu.

Main variety

Zhang Qiu scallions, scaly scallions.

Key points of cultivation

① selected high dry land with fertile soil and irrigation and drainage conditions to raise seedlings.

② was used to raise seedlings and transplant them in time. Sowing and raising seedlings in the first and middle of March, the sowing amount per mu is 2.5-3 kg, and one mu of seedlings can be planted in 4-6 mu. Do a good job of topdressing, killing maggots and disease prevention at the seedling stage. Prepare the soil in time after wheat harvest, apply sufficient bottom fertilizer on ridges, and apply diammonium phosphate 15-25 kg per mu. The transplanting time is no later than July 25, and the planting density is 60 cm between rows and 5 cm between plants, with 22000 seedlings per mu.

③ field management. Shovel and loosen the soil in time after rain to improve soil permeability. With the growth of onions, the secondary culture ground 2. To increase the length of green onions and prevent lodging.

④ should pay attention to control diseases and insect pests such as purple spot of green onion, downy mildew and ground maggots.

⑤ fertilizer and water management. In late August, about 15 kg per mu of diammonium phosphate or 25 kg of standard nitrogen, so as not to take off fertilizer, combined with topdressing irrigation. Irrigation should not spread over the ridges and terraces, often keep the maximum soil water holding capacity of locusts 70-80%, and pay attention to drainage if there is too much precipitation.

⑥ harvested in good time. Spring onions are usually harvested in early October. Late harvest of green onions to empty to reduce production.