Field management of pollution-free leaf lettuce

Generally, 5-6 days after planting, the seedlings can be survived. After the lettuce is transplanted, the seedlings can be watered and topdressed. For the lettuce, the seedlings can be used for 1 week, and the water and fertilizer management can be carried out after the seedlings are finished. For every 667 square meters, 10 kg of urea can be chased with water, and the soil should be kept moist. The quick-acting nitrogen fertilizer should be stopped 30 days before harvest to prevent excessive accumulation of nitrate in the leaves. In addition, in the early stage of heart leaf inoculation, the lettuce should also be sprayed with 0.2% potassium dihydrogen phosphate solution.

Lettuce is not resistant to high temperature and high humidity. When the temperature exceeds 25 °C, it should be ventilated to cool down or take sunshade measures. At the same time, lettuce is also afraid of water, so there is no water in the raft, and it must be drained in time after the rain. After the hot summer rain, the garden must be poured in time. Linyi Fertilizer Network Copyright
The stems and leaves of the endive are young and juicy. When working in the field, care should be taken not to damage the stems or roots, otherwise it is susceptible to disease. In the case of high temperature and high soil moisture, when there is no dew on the leaf surface, remove the yellow, old and residual leaves near the ground to prevent disease. Linyi Fertilizer Network Copyright
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