1, soil preparation and sowing
First of all, we need to choose a suitable soil for planting, mainly fertile, soft and permeable soil. Then do a good job of land preparation, turn over the soil to a depth of about 30 cm, level it with a fine rake, and then apply sole fertilizer, mainly farm manure and compound fertilizer. The sowing time in Mao Cong is generally after Tomb-Sweeping Day, and the sowing method is mainly border sowing. Before planting, well dig the border and control the planting density. If it is ridge farming, then you must dig the ridge first, and keep the ridge spacing at about 60cm.
2. Scientific fertilization
The distribution of root system in Mao Cong is shallow, so its nutrient absorption capacity is not strong and its drought tolerance is poor. Therefore, in the growing period of Mao Cong, topdressing should be done well to promote the growth of Mao Cong and bulbs, and provide sufficient nutrition for the growth of Mao Cong. We should do a good job of topdressing according to the growth stage of Mao Cong. For example, ammonium sulfate, potassium sulfate and Woye water-soluble fertilizer are the main topdressing at seedling stage in Mao Cong. After the leaf germination speed is accelerated, the amount of fertilizer should be appropriately increased to improve the quality and yield of Mao Cong.
3, reasonable watering
After sowing in Mao Cong, if the soil contains a lot of water, you can raise the soil temperature without watering. If the soil moisture content is low, it should be watered according to the actual situation. However, attention should be paid to controlling the amount of watering to avoid excessive watering leading to rotten roots and seedlings. Then, when the bulbs in Mao Cong are partially swollen, the watering amount should be appropriately reduced to encourage the seedlings to squat, and the squatting time is generally about one week. As with topdressing, the amount and frequency of watering should be adjusted reasonably according to the growth stage of Mao Cong.
4, pest control
Pest control is also very important in Mao Cong. Common diseases and insect pests in Mao Cong are downy mildew, onion thrips and so on. No matter what diseases and pests are, prevention should be given priority to, and proper spraying and disinfection should be carried out about one week after emergence, which is not suitable for rainy days. Spraying different chemicals according to different diseases and insect pests, such as chlorothalonil is mainly used for downy mildew, streptomycin is mainly used for purple spot, and EC is mainly used for scallion thrips.