High-yield cultivation techniques of Cucumber in large Arch shed after Autumn

After the postponement of autumn, the external environment of greenhouse cultivation was in the high-temperature and rainy season in the early stage, but dropped sharply in the later stage. With years of experience, in Heze City, Shandong Province, live broadcast is generally held in the shed in the first ten days of August, and the market is supplied from late September to December, which connects with the supply of solar greenhouse in autumn and winter. The yield per mu is about 4500 kg, the benefit is about 7000 yuan, and the social and economic benefits are remarkable. Variety selection. Generally, varieties with strong disease resistance, high temperature resistance in the early stage and low temperature resistance in the later stage should be selected, such as Jinyan No. 4, Jinchun No. 4, Jinchun No. 5, Jinyou 11 and so on. The sowing time is usually in early August. The sowing method generally uses the buckle shed for direct seeding, and the ventilation is turned on four weeks after sowing, leaving only the film at the top to protect against the sun and rain. The furrow is opened according to the row spacing on the ridge surface, the ditch depth is 3 cm, the bottom water is poured, and the seeds that promote sprouting are sown according to 25 cm plant spacing. Each hole is sown with 2 seeds, and 1.5 cm soil is covered after sowing. Generally, the seedlings can emerge after 3 days, and the seedlings will be fixed after the emergence of 2 true leaves. In the early stage of temperature management, the outside world is still high temperature and strong light, which is not suitable for the normal growth and development of cucumber. At this time, in addition to the roof buckle film, there is wide ventilation around, which plays the role of cooling and rain-proof in the Arbor. You can put the film down when it rains and open it immediately after the rain. If there are conditions, it is best to cover the sunshade net on the shed, remove it every morning and evening and on rainy days, and cover it at noon in the hot sun. When the cucumber enters the peak period from mid-September to early October, the natural temperature is more suitable for the normal growth of cucumber, and the sunshade net is removed. When the temperature in the shed is controlled at 25 ℃ ~ 30 ℃ in the daytime, 15 ℃ ~ 18 ℃ at night, and the external temperature is more than 15 ℃, the vents should be opened. After entering the middle of October, the external temperature gradually decreased, and the ventilation volume should be reduced gradually, keeping 25 ℃ ~ 30 ℃ in the daytime and 13 ℃ ~ 15 ℃ at night. When the temperature in the greenhouse is below 10 ℃, the shed can be managed by adding a small arch shed to prolong the melon setting period. When the temperature drops to 5 ℃ at night, the cucumber will no longer grow and all the seedlings can be pulled. In the early stage of plant adjustment, pay attention to upper shelves and binding vines, remove lower lateral branches, remove male flowers and tendrils, and use lateral branches to increase yield in the later stage. When the height of the plant is close to the roof, topping can be adopted to promote the germination of lateral branches. When the size of the main vine is less, after the female flowers appear in the lateral branches, two leaves are left to pick the heart and cultivate the melon. In addition, pay attention to the prevention and control of diseases and insect pests.