Onion and fertilizer management in autumn
Q: Autumn is an important period for the growth of vegetables. How should we strengthen field management of green onions? Agrostis Stolonifera,Astragalus Sinicus,Vicia Villosa,Agropyron Cristatum Chengdu Lv Mu Tian Xia Agricultural Technology Co. LTD , http://www.cdlmtx.com
Answer: In the fall, the center of lush green onions management is to promote roots, strong trees and soil softening, strengthen water and fertilizer management, and create suitable environmental conditions for the formation of light blue, so as to improve the output and quality of green onions.
Q: How do we water the autumn onion?
Answer: After the green onions are planted, they enter the summer season. At this time, the management center is to promote rooting. Watering should be controlled, drainage should be prevented after the rain, and rot, yellow leaves and dead seedlings should be prevented. At the same time, strengthen the cultivator and promote root growth. Between the beginning of autumn and Bailu, the principle of light pouring, watering in the morning and evening should be mastered in irrigation. After the white dew, green onions enter the peak of growth, and irrigation should be based on the principles of pouring and re-watering. Pour water once every 4 to 6 days. After the frost falls, the temperature drops, the onion basically grows, the water requirement decreases, and the soil is kept moist. Stop watering 5 to 7 days before harvest, which is beneficial to harvesting and transportation.
Q: How do fall green onions suit fertilizer?
Answer: Welsh onions are also top-dressing on the basis of applying base fertilizer. After the beginning of autumn, when plant growth speeds up, topdressing "foliage attack", per acre Shi maturity farmyard fertilizer 1500 ~ 2000 kg, superphosphate 20 ~ 25 kg, promote leaf growth. After the White Dew Festival, it enters the period of vigorous growth of scallions, which is the key period for the formation of welsh onion yield. It should be combined with watering and topdressing “attacking tree-fertilizer†twice. Each time, the urea should be applied with 15-20 kg of potassium sulphate and 10-15 kg of potassium sulphate. Apply to the line, watering in shallow cultivator.
Q: How can we improve light blue yield and quality?
A: Earthing is an important measure to soften leaf sheaths, prevent lodging, and increase light blue yield and quality. From the beginning of the autumn to the harvest, the soil is usually cultivated three times. The former two times combined with the cultivator, the ridge soil will be plunged into the onion ditch, and the ditch will be filled after the summer heat. The height of each cultivating earth shall be determined according to the height of the growth of the pseudo-stem, and each time 3 to 4 cm, the soil shall be cultured to the leaves of the uppermost blade, and the heart shall not be buried to prevent the leaves from decaying.
Q: What are the characteristics of fertilization of onion and garlic vegetables?
Answer: Onion and garlic vegetables are a kind of crop that requires more fertilizer and fertilizer. It is very important to apply basal fertilizer, and organic fertilizers can be used in combination with phosphorus, potassium fertilizers or three-component fertilizers. The nutritive properties of onion and garlic vegetables are both potassium-loving and sulfur-loving crops. Therefore, under the premise of balanced fertilization, we must pay attention to the application of potassium sulfate, have a significant effect on improving production and improving quality.