The onion in the Yangtze River Basin is usually sown from March to April, harvested from June to July; it can also be sown from September to October, and harvested from April to May in the second year. During this period, there was no supply of young cubs to the market, and the young leaves were the main source.
It is advisable to plant the fields with flat terrain, good drainage and fertile soil. No matter the sandy soil or clay loam, the requirements for soil pH are not strict, and the acidity to micro-alkaline can be. However, it should not be continuous for many years, and it should not be connected with other onion and garlic vegetables. After planting for 1 to 2 years, it needs to be replanted. After selecting a good plot, it will be ploughed. Generally, 2500-3500 kg of fermented manure or manure will be applied per mu, plus 30-35 kg of phosphorus and potassium fertilizer, or 40 kg of compound fertilizer. After the application, the hoe is simmered, and the width is about 2 meters. The width of the sulcus is 40 centimeters and the depth is 15 to 25 centimeters. It can be used for the “three gullies†and can be irrigated.
The onion and the chives are generally propagated by ramets. It is advisable to plant ramets in plants in the same year, and the average temperature is about 20 °C. The Yangtze River basin is generally in the period of April to May and September to October, depending on the local temperature. Before planting, the mother plants in the field will be excavated, cut into roots, and the branches will be opened by hand. Planting plants are larger in size and less chives. Generally, the onion spacing is 23 cm, the hole spacing is 20 cm, and each hole is planted with 2 to 3 seedlings, planting 4 to 5 cm deep; the pitch of fine shallots is 10 cm, the distance between the holes is 8 cm, and the seedlings are 2 to 3 in each hole. , planted 3 to 4 cm deep. After planting, pour enough water, and the chives sometimes have a small amount of seeds, which can be used for sowing and breeding. After planting, it will be shallow and clear, and the weeds will be removed. The top dressing is 10% decomposed and diluted manure water or 0.5% urea thin fertilizer water, and the planting is 1000-1500 kg. Due to the shallow distribution of onion roots and weak absorption, it is not resistant to heavy fertilizer, not tolerant to drought and phlegm, and has poor competitiveness with weeds. It must be poured in small water to keep the soil moist, and pay attention to rainy weather. Water. After the planting is completed, the tillering begins, and the tiller can be re-pulsed twice. Generally, after 2 to 3 months of planting, the plant clusters are relatively luxuriant and can be harvested. If it is not harvested, it can also continue to grow in the field, and it will receive winter in succession. Or take a part of the tiller for each plexus, leaving a part to continue the management of fertilization, and then collect it after growing.
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