The suitable growth temperature of lettuce is 15 ~ 20℃, and the temperature difference between day and night is large, so it is more suitable for planting. Generally, it is sown in autumn around August and planted after emergence. Of course, some greenhouses can be planted out of season, and now it is more suitable for people who grow in the open air to grow lettuce. Because the root system of lettuce is weak, it is necessary to carry some soil with you when planting, and water human urine and feces in time after planting to promote its growth. At the same time, water it regularly for two or three days, so that it can be harvested after one or two months.

Cultivation of leek

Allium plants can be planted all year round, mainly for seasoning and seasoning. Usually, shallots are indispensable in recipes such as cold salad and boiled noodles. Leek is cold-tolerant, but not drought-tolerant, and needs more fertilizer. Generally, loose and fertile sandy soil with good drainage and permeability is more suitable for growth. Generally, one acre of leek needs to be planted with farm manure of about 1450 kg and NPK compound fertilizer of about 1 10 kg.