Detailed Explanation of Key Technical Points for Growing Lettuce in Greenhouses

We eat a lot of lettuce, and it is fairly convenient to grow. Greenhouse cultivation is quite popular now, so today the editor will introduce greenhouse lettuce growing techniques to everyone. Let's take a look together!

1. Greenhouse lettuce growing techniques

To grow lettuce in a greenhouse, you need to select a suitable variety. Lettuce seeds have high requirements for the seedbed, and the bed soil must be level. The seeds should be pre-germinated before sowing; for sowing dry seeds, the seeds need to be pre-treated with a chemical dressing in advance. Routine field management mainly consists of watering and fertilizing, and harvesting can be done at the appropriate time.

2. Greenhouse watering management

Watering is a key part of lettuce cultivation. If too much water is given, the plants grow quickly, but the leaves are thin, the heads are loose, and the yield is relatively low. Therefore, it is very important to master the timing and amount of watering. At the same time, it must also be handled flexibly according to differences in air temperature and soil temperature at different growth stages. When growing in a greenhouse, generally watering 5 to 6 times over the entire growth period is enough. That is, 3 to 5 days after transplanting, water once to help the seedlings recover, so they recover quickly and grow new roots;

After the first topdressing, water thoroughly once, which can make the rosette leaves grow vigorously and allow the plant to develop fully; depending on the specific situation, during the seedling-hardening stage, water appropriately once, then carry out intertillage and continue seedling hardening; the fourth watering should be combined with the second topdressing, and this time the amount of water must be sufficient, which can speed up plant growth and make the inner leaves form heads quickly; in the middle stage of head formation, combine with the third topdressing and water once more to promote large and firm heads. For head lettuce, do not apply fertilizer or water in the late stage of head formation, to avoid rot or head splitting. Stop watering before harvest, which is beneficial for storage and transport after harvest.

That is all for today's summary and organization by Tuliu.com on issues related to greenhouse lettuce growing. We hope this article is helpful to you.