First, the summer and autumn sowing vegetable cultivation. When the leek grows to 15 centimeters in height, the temperature rises and the rain increases. It is not suitable for the growth of leeks. Generally, it is not to top-dress before the beginning of autumn. Watering should be controlled. After cooling and rainwater, the well water is cooled to prevent rooting. After the end of August, the temperature began to drop, and the leeks entered a vigorous growth period. The management of fertilizer and water should be strengthened. Bio-organic fertilizer should be flushed with water every 10-15 days, and 50 kg per 667 square meters (1 mu) should be applied, or chicken manure should be applied. Organic fertilizers such as bean cake and so on are applied three times in a row, with as little chemical fertilizer as possible and with reduced chemical fertilizers. Stop fertilizing and watering in early October to prevent leggy. 2. Summer and Autumn Management of Leeks Reapply base fertilizer. Leek has a "jumping root" habit. Therefore, within 1-2 days after stopping the leeks in the spring, the leeks were not grown tall and the rammed soil was damp. The rammed soil was loosely smashed and finely ground, and then 15,000 kilograms of the composted fine soil miscellaneous fertilizer was applied every 667 square meters. Face to face. The best application of bio-organic fertilizer, because bio-organic fertilizer is not conducive to pests, high efficiency, can improve soil and reduce pollution. Spread 100 kg per 667 square meters evenly on the surface, and then cover 1 cm of fine soil, and spread the flour. Do not water it in case of compaction. The subsequent management of fertilizer and water is the same as the management of raw leeks in the same year. 2. Prevent pests and diseases. Aphid is a major pest of leeks and must be controlled in time. In the middle of a year, there are three peak periods: early May, late July, late October, and late October. Control methods: (1) Apply decomposed organic fertilizer. Do not apply fertilizer, it is best to use bio-organic fertilizer. (2) Use 48% Difenoxin and 48% Loestnut EC as insecticides. The drug has been used to control cockroaches, cockroaches, wireworms and other underground pests, and its control effect has reached 94%. Ground wolfberry uses 300 to 400 ml per 667 square meters, 500 kilograms of water, removes the sprayer with a kettle or sprayer, or irrigates along the ridge, or uses 500 ml per 667 square meters, and floods the water; Le Si is able to use 400 to 667 square meters per gram. 500 ml. The method of administration is the same as that of the earth. (3) Biological control. The application of plant ash on the ground along the ditch, applied from 100 kg to 200 kg per 667 m2, and the grass ash is alkaline, which can inhibit the hatching of larvae and destroy their living conditions, which is not conducive to the occurrence of earthworms. In addition, plant ash can increase soil potassium fertilizer and promote the growth of leeks. In summer, the leek is prone to diseases, and once every 10 to 15 days, a mixture of 50% sulfur 1000 times 50% carbendazim 500 times and other bactericides are sprayed for prevention and treatment. 3. Plant scaffolding. The weather is hot and rainy in summer, and the leeks are more than two years old. If they are not cut during the summer, the plant height is likely to be lodging, which will seriously affect the ventilation and light transmission, and make them vulnerable to disease. In order to prevent lodging of leeks and reduce disease, a scaffolding method was adopted, namely, 6 stilts with a height of 30 cm were placed at equal distances on both ends of the pupa, and iron wires were pulled between the caskets and the two wires of the cheeks were Every 5 meters plus a raft is fixed. Between each ridge of leeks, fine bamboo is placed on the wire in the direction of the south and north, and the ligatures are good. The leaves can grow on the wire and bamboo raft without falling down. 4.éŸè–¹ Harvest in time. After the leek is convulsed, it must be harvested in time in order to reduce the consumption of nutrients in addition to the remaining fields, which is conducive to the production of a robust rhizome and a winter leek. 5. Timely cover coverage. According to the dormancy period of the leeks, the sheds should be punctuated. Put the branches and leaves in front of the shed, clean the branches and leaves, place the rammed soil near the roots of the hoe roots and place them between the rows so that the bulbs will be exposed and exposed to sunlight and freezing for 4 to 5 days, followed by spraying every 667 square meters. 10 kg of urea, 30 kg of diammonium phosphate, 30 kg of potassium sulfate, and organic fertilizer such as bean cake and sesame, or 50 kg of organic bio-fertilizer, and then spread out the clay and lay a layer of 0.5-1 cm. Thick dry soil, irrigation of large water, with water flushing Shi Di Ling insecticide, apply 500 ml per 667 square meters, and then buckle shed with soil seal Yan, night cover grass hoe or wheat straw insulation.