Leaf vegetables refer to the general term for a large group of vegetables that are eaten on tender leaves, petioles, or stems. Leafy vegetables are rich in various vitamins and minerals that consumers love. However, due to the impatience of transportation and preservation of leafy vegetables, it is difficult to solve the contradiction of shortage of leafy vegetables in the summer and autumn hot and dry seasons due to impatience of transportation and preservation of leafy vegetables. Moreover, leafy vegetables generally prefer a cool environment and it is difficult to cultivate under high temperature and drought conditions. To this end, the author concluded a set of high temperature and drought resistant cultivation techniques for leafy vegetables. The specific points are as follows. Variety selection There are many types of leafy vegetables, including loose leaf cabbage, cabbage cabbage, cabbage cabbage, scoop white, lettuce, spinach, celery, edible fungus and rattan dishes. Scattered cabbage selection 'Precocious No. 5', Scoop children's white selection of 'Huaguan', 'Japanese Qingjiang white'; Chinese cabbage selection 'Japanese Xia Yang', 'Korean Spring and Autumn King'; lettuce selected 'Keguang 1', 'double pointed ', 'Special heat-resistant two white peel', 'Kexing 3'; spinach selection 'Netherlands than Jiu 5', 'Hong Kong Dolly all-round spinach', 'Hua Bo 1'; celery selection 'Italian summer' , 'American celery' and so on. Germination sowing Suitable sowing is generally conducted from July to mid-September. Seedbed preparation seedbed should be selected where it is cool, moist, and convenient for irrigation. The seedbeds were deeply turned, and the weeds were wiped out. The organic fertilizer and lime were used as common fertilizer and the soil was soaked for 5 to 10 days. Low-temperature germination of lettuce, celery and other seeds germinate at high temperatures difficult, must be primed. When germination, the seeds should be soaked for 6-8 hours, then wrapped in wet gauze, placed in a refrigerator, keeping the temperature at about 15°C. Seeds can also be hung in deep wells, 10-20 cm away from the surface of the water. When watering cabbage, scooping white or Chinese cabbage germination, the seeds should be soaked for 3-4 hours and then moistened with wet gauze. During germination, wash the seeds once a day with water and wait until 80% of the seeds are white. Real-time sowing before planting seedbed should be enough bottom water, appropriate dilute sowing, lettuce generally sowing 5-10 grams of 1 square meters seedbed, 500 grams per hectare seedbed sowed cabbage, scoop children per hectare seedbed sowing 1000-3000 grams, Chinese cabbage 1000-3000 grams per hectare seedbed sowing, spinach per hectare seedbed sowing 2000-3000 grams. After sowing, it should be covered with 0.5cm thick "Stone millet" or fine soil, and then cover the net or straw, in order to facilitate the water cooling, anti-rainstorm. Water should be sprayed once a day before emergence. After 60% of the seeds were unearthed, the surface coverings were promptly removed and shaded. Seedling management cover shade net or straw curtain nursery shed, cover every day at 8 o'clock, opened at 17:00. When the temperature is too high, water can be sprayed on the bamboo curtain or the shade net. Weeding and seedlings are 1-2 times at the seedling stage. Pay attention to the prevention of damping-off during the seedling stage, with 75% chlorothalonil WP 800 times solution or 70% BD WP 500-700 times, 58% Lei Duomier WP 500 times spray control. Always apply decomposed defecation water to promote growth. Whole soil fertilization Apply 2500 kg of organic fertilizer and 50-75 kg of compound fertilizer per hectare. Mix well with the cultivator to make a compartment with a depth of 25.0 cm and a width of 1.3 meters. High Pressure Extension Tubings High Pressure Extension Tubings,high pressure PVC extension tube,Extension Tubings,extension tube medical Anesthesia Medical Co., Ltd. , https://www.jssinoanesthesia.com