Lettuce tastes crisp and refreshing. It is a dish that many flower lovers often see on the dining table. Although this dish is not expensive in the market, it is also a cost if you eat it frequently. Then I will teach you how to grow lettuce.

At point 1, we need to pay attention to its growth temperature. The optimum temperature of lettuce seed germination is 15-20℃, and the seedling growth has strong adaptability to low temperature of -5-6℃, and the suitable growth temperature is 12-20℃ and 165438+ in the formation period.

Secondly, pay attention to the planting time.

Lettuce can be sown all year round, and it can also be sown in February to March in spring. Spring sowing has the highest survival rate. Sunscreen should be used in summer, and June-July is not suitable for sowing and germination. Sunscreen should also be used in autumn, and seeds can be planted in August-September. The temperature in winter should be controlled around 15℃, and10-1month can be planted. Choose high-yield varieties with strong heat resistance, slow response to sunlight and difficult bolting, such as super heat-resistant white-skinned lettuce. Sow in late June, and choose the seedbed in a place with fertile terrain and soil in Gao Qian. Soak seeds before sowing to accelerate germination, so as to facilitate seedling emergence. The seeds of lettuce will germinate in about a week. If we choose to plant lettuce in autumn, we should soak the seeds in cold water for several hours before planting lettuce.

Third, we should pay attention to the prevention and control of lettuce diseases and insect pests.

In China, both stem lettuce and leaf lettuce are widely planted, but there are often various diseases and insect pests. Diseases and insect pests will seriously harm the growth of lettuce, leading to the decline of lettuce yield and poor quality. First, select varieties with strong disease resistance for rotation, pay attention to planting density when planting, and do a good job of soaking and disinfection before sowing. Apply sufficient fertilizer, add proper amount of bactericide to the fertilizer, and do a good job in water and fertilizer management.

Strengthen field management, often observe the field and do a good job of prevention. If any abnormality is found, the diseased plants should be pulled out in time to prevent the spread of the disease.