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Leeks, also known as spinach, bamboo leaf vegetables, cabbage. It is a rare dish with unique flavor, delicious taste, rich nutrition, stir-fry, meat stir-fried, side dish and soup. Amaranth is hot and humid, and the best growing season in North China is summer, and the remaining seasons must be arranged in protected areas. Its cultivation method is divided into two kinds: direct seeding cultivation and seedling transplanting. First, the selection of varieties in North China should choose to use Xerophila cultivated seedlings, of which Beijing, dry pickles and Thai leeks as the best, followed by Sichuan, Chongqing and Zhejiang Lishui spinach is also more practical. Second, the cultivation points (a) live cultivation Seed period from the beginning of May to mid-July can be. Before planting, sufficient base fertilizer should be applied and 5000 kg of organic fertilizer should be used. Immediately after the cultivation of the live seedlings, due to the adequate fertilizer on the upper part of the loquat, it is possible to solve the problem with the topdressing fertilizer without applying the base fertilizer. The land preparation should be fine, for a width of 1.33 meters and a length of 7 meters, 5 rows of furrows, with an average spacing of 25 centimeters for drilling, 3 to 5 centimeters of seeding depth, 11 kilograms of seeds per mu, and light stepping after soiling. Pour one permeable water and fill the water once when the ground is dry after 3 days. It takes about 5-7 days from sowing to emergence. During this period, it is important to keep the soil moist and sprouting. Immediately after the emergence of seedlings, water is poured into the growth stage. (II) Seedlings transplanting and taking plastic sheds or improved sheds (improved Yangshuo) in certain sections for nursery sites. After flattening the land, make a width of 1 meter and a length of 6 meters. Apply organic fertilizer 25–30. Kilograms, turn and levelling and then pouring enough water, and then sowing; sowing rate of about 0.5 kg per kilogram, cover fine soil thickness of about 3 cm, cover the surface of the cover film to warm up and maintain the temperature, maintain the greenhouse temperature 30 °C -35 °C. After 4 days of Qimiao, reduce the temperature of the greenhouse by 25°C-30°C, and water it once to keep the surface moist. If the height of the seedling is 10cm and 4-5 leaves are true, it is necessary to prepare the seedlings for cultivation at low temperature for one week. The day before planting, the seedbeds were flooded with water, and the seedlings were cut into 8 cm square blocks on the next day. Each soil block had at least 3-5 seedlings. The open field was made into a flat plant (with the specifications of direct seeding cultivation), the planed nest was planted, the planted plant was planted in 5 rows, and the distance between the points was 20 cm. The plant was irrigated with water, and the seedling water was poured on the third day. (3) After the Autumn Harvest Festival (in late September), after the autumn season, the cold winds are everywhere and the leeks in open fields are no longer suitable for survival. In order to supply the market in succession, the leeks can be smashed (preferably the septum) and buckled in plastic sheds. Increase the growth period. Through ventilation management measures, the daytime temperature is kept between 30°C and 35°C and at night around 15°C. If grass curtains are available, small sheds can be covered from October, so that before the winter solstice (mid-December), they can still be harvested 1-2 times. Whether it is a live-breeding leek or a transplanted leek, its field management is basically the same. For example, water management, in principle, to keep the ground moist and not dry; top dressing management, whenever the harvest once to add a fertilizer, mainly nitrogen fertilizer, human waste, chemical nitrogen fertilizer and grass ash alternately used; harvesting methods, must be in Two or three lateral shoots are reserved at the base of the stem, which is reserved for the continued growth of leeks; in the technique of pruning, too many root pods are seen and the quality of the product is hindered, and the harvesting should be carried out properly to cut off part of the pods. The strain retains 2-3 shoots (3 to 4 for each hole in the hole plant) to facilitate the rejuvenation of the plant. In general, leek can be harvested more than 20 days apart, in which nursery hole planting, each harvested about 1100 kilograms per acre, drilling can receive about 1350 kilograms, 7500-8000 kilograms per acre can be harvested throughout the year The economic benefits are considerable.