Lettuce, also known as lettuce, is planted with high-quality, disease-resistant varieties prior to planting. At the same time, it is important to understand the cultivation methods of lettuce and the cultivation time of lettuce to increase crop yield.
Lettuce variety selection, overwinter lettuce, spring lettuce selection of cold-resistant, strong adaptability, pumping late varieties, such as "cold white leaf real", "if vine leaves" and so on. Summer and autumn lettuce, the selection of heat-resistant early maturing varieties, such as "Cold-resistant white leaf real", "heat-resistant large flowers" and so on.
Lettuce planting time, spring lettuce, December to March greenhouse nursery, from mid-February to late March open seedlings. Summer lettuce shoots are cultivated in the open season from April to May, and covered with shade nets from late May to July. Live or high density plants are planted. Autumn lettuce, July-September use shade net covering sowing, seedling transplanting. Overwinter lettuce, October to November open field nursery.
Lettuce harvest time, when the highest level of the top leaf of the lettuce is flat, it is suitable for harvesting the stem of the lettuce, and the tender plant can be harvested at any time before the stem is sufficiently enlarged. In order to prolong the time-to-market, autumn lettuce can be harvested in a delayed manner. You can use hand-dip in sunny days to go to long spots and buds, or start the rosette period and spray 350-500 CCCs 2-3 times every 5-7 days.
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