In recent years, with the changes in market demand, leaf vegetables have become increasingly popular in the summer and the planting area has gradually expanded. However, the cool and cold climate of leafy vegetables and the high temperature, strong light and rainy environment in summer are extremely unfavorable to the growth of leafy vegetables. In particular, spinach, lettuce, and garland chrysanthemum are prone to convulsions when planted in the summer, and once convulsed, their commercial value is greatly reduced.
There are many factors affecting leafy vegetables, including varieties, climate, and cultivation conditions.
First, choose late-maturing cultivars. Different varieties, its adaptability and sensitivity to light and temperature are also different. When planting leafy vegetables in the summer, it is best to choose varieties that are resistant to high temperatures, strong growth, and unresponsive to long days, such as Italian resistant sorghum lettuce.
Second, prevent high temperature and strong light. It is recommended that vegetable growers cover the shading nets to cool down. Generally, they are covered during the high temperature period from 10 am to 4 pm in the sunny days. The shading nets will be rolled up on other days and rainy days. This will not only prevent high light and high temperatures, but will not affect the photosynthesis of vegetables. In addition, spraying mud to the shed film or spraying water to the foliage at a high temperature at noon has a good cooling effect.
Finally, interplanting with eggplant vegetables. When the summer leaf vegetables and the eggplant vegetables are interplanted, the higher characteristics of the eggplant vegetables can be utilized to cool the shade and facilitate the growth thereof.
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