Key points of High-yield cultivation of Spring Cucumber

The suitable varieties should be selected under the condition of low temperature in early spring, with strong parthenocarpy, low melon position, more female flowers, disease resistance, high quality and high yield, such as Changchun, Jinyan cucumber and so on. Seed germination should be carried out 2-3 days before sprouting and planting. In the process of accelerating germination, you should often turn the seeds so that they can bear the temperature evenly, and they can begin to sprout in about 24 hours. It was found that when the bud tip of the seed was slightly exposed, the temperature could be reduced properly, and the temperature could be maintained at about 25 ℃, and the seeds could be fully produced in 2-3 days. After budding, sow the seeds. When sowing, the bud is facing down, and it is best to make the bud face in the same direction. Cover the soil immediately after sowing. The seedlings should be planted in sunny days when they grow up. A month before planting, start finishing the plastic film to buckle the shed in order to increase the soil temperature as soon as possible. Strengthen the management one is the temperature management in the greenhouse. The climate in early spring is changeable and the temperature is low, so it is easy to be threatened by cold air, so early planting should consider multi-layer film covering or temporary heating by furnace. About a week after planting, the greenhouse should be sealed, heat preservation and moisturizing, to promote slow seedling. The second is humidity management. In sunny days, the relative humidity in the spring cucumber shed should be controlled at 55%-65%, and at night it can be kept at 85%-90%. Keep it at 70%-85% in cloudy days and 90%-95% at night. The third is fertilizer and water management. In the early stage of seedling planting, sufficient seedling water should be watered to promote early survival. It is necessary to control watering and squat seedlings from living trees to the later stage of growing trees. In addition to paying attention to crop rotation, soil disinfection and excessive humidity in the greenhouse, Bordeaux solution can be sprayed on downy mildew, 200 times wettable sulfur powder suspension on powdery mildew, 80% Dyson zinc 800 times on anthracnose and so on.