Lettuce cultivation technology

*, Choose the mid-late maturity varieties that are not easy to be simmered and resistant to high temperature under long day light, such as Chengdu Erbaipi Mijieba, Nanjing purple peel and so on.

Second, sowing at the right time. Generally, the Yangtze River basin is sown in August and harvested before winter. Seeding too late in colder winter areas results in lower yields and poor quality.

Third, it is the hot season when sowing, seeds are not easy to germinate, it is difficult to raise seedlings, and low temperature should be used to promote germination. That is, the seeds are soaked and placed in a cool place, such as a refrigerator or a cave. As long as about 80% of the seeds germinate under 3 to 4 days under 25 ° C and humid conditions, the seeds can be sown. The seedbed should be watered frequently to keep the soil moist to facilitate emergence.

Fourth, proper close planting and strengthening of field management. Autumn lettuce plants are generally small and should be increased in density. Use soil with high soil fertility to plant, and strengthen the management of fertilizer and water, promote the growth of stems and leaves, avoid early pumping.

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