In recent years, the area of ​​growing leafy vegetables has been increasing. However, the high temperature, strong light, and rainy environment in summer have caused various obstacles to the production of leafy vegetables that are used for the cold climate. In addition, the problem of double cropping has caused many problems in the planting process, such as dead spinach and lettuce twitching. It is plagued farmers who grow leaf vegetables. We will publish some issues that should be noticed in the cultivation of leafy vegetables during the summer and provide information for farmers and friends and hope to help farmers.
Break through barriers to high yield of Artemisia seleng
One should pay attention to cooling. Chrysanthemum is a cool and humid climate. It is a semi-cold-tolerant vegetable. It is not tolerant of high temperatures, and it is suitable for growth at a temperature of 17°C to 20°C. It grows poorly at 29°C and leaves a small number of leaves. Therefore, if chanterelle grows well and the yield is high, the temperature in the shed must be reduced to a temperature suitable for its growth. Cooling measures can be taken to cover the shade net. Some vegetable farmers often water at a high temperature at noon to cool down, a large number of tests prove that this method is not appropriate, because when the ground temperature is too high, blind watering and cooling will often lead to root damage Artemisia halodendron, prone to dead seedlings phenomenon.
Second, it is necessary to pay attention to preventing lodging. Artemisia selengensis grows too densely, the temperature difference is too small, and the fertilizer is too much. The stalks are weak and easy to grow. They often fall flat in a high-humidity environment. Therefore, we must take early measures to prevent the glutinous glutinous shooters from lodging. The seedlings can be planted in the second water time of the wormwood so that the plant spacing is maintained at 2-3 cm. It can also be used to love more than 3000 times liquid or 1500 times booster foliar spray, so that thick stalks to prevent lodging.
Third, we must pay attention not to allow rain into the shed. Summer rain is more, the rain water often causes wormwood to die, which seriously affects the yield of Artemisia selengensis. Therefore, prevent rain from entering the shed when it rains. Once the shed is filled with rainwater, it must be poured in well water to prevent dead trees.
Fourth, we must pay attention to protecting the leaves. The leaf is an important index to determine the commercial level of Artemisia halodendron. To protect the leaves, we must first do preventive work. Epidemic diseases and downy mildew are the major diseases that cause decayed leaves and yellow leaves of Artemisia selengensis, and they should be controlled.