First, it should be selected in the early spring and low temperature conditions, the parthenocarpy (that is, can be strong without insect pollination) strong, low melon parts, female flowers, disease-resistant high-quality products, such as Changchun Mia, Jinyan cucumber, etc. .
Second, seed germination should be carried out 2 to 3 days before sowing. When germination, pour the seeds into hot water at 55 °C, stir constantly, simmer the floating sorghum seeds after cooling, and continue to soak for 4 hours to 6 hours. Before the seeds are removed, the seeds can be washed by hand, the attachments of the epidermis are removed, and then washed and washed again, dried in water, wrapped in a cloth, and placed at a temperature of 30 ° C to germination. During the germination process, the seeds should be frequently turned to make them evenly withstand the temperature, and budding can begin in about 24 hours. It is found that the temperature of the seed can be maintained at about 25 ° C when the seed is slightly exposed, and the seed can be budd after 2 days to 3 days. After the buds are released, the seeds are sown. The day before sowing, the nutrients in the seedbed or the nutrients prepared in advance should be irrigated. After the water has been infiltrated, a layer of fine soil is sprinkled over the nutrient soil or nutrient layer, and then it can be sown. When sowing, the bud ends down, preferably with the buds facing in the same direction. Cover the soil immediately after sowing. The soil used for covering should be sieved beforehand, and the soil moisture should be moderate. After the seedling grows up, it should be selected for sunny planting. One month before planting, the plastic film was finished to be buckled to increase the soil temperature as early as possible. 10 days to 15 days before planting, start the soil preparation and make organic fertilizer. Generally, 60 mu to 80 liters of high-quality soil and manure should be applied per mu. Fully decomposed human excrement 20 to 25 ton (diluted with water), applied evenly to the ground, ploughed and buried in the lower layer of soil. Made of stilts, the width is 1.3 meters. 2 rows per planting, line spacing 40 cm to 50 cm, plant spacing 20 cm to 25 cm, early planting period, water should be stabilized after digging a hole, the ground temperature is high and normal planting, can be watered after planting seedlings .
Third, we must strengthen management. The primary problem after planting is the warming and warming of the greenhouse, especially the ground temperature is more important.
First, the temperature management in the shed; the climate in early spring is variable, the temperature is low, and it is vulnerable to the threat of cold air. Therefore, multi-layer film covering should be considered for early planting, or temporary heating with a stove. A week or so after planting, the greenhouse should be sealed to keep warm and moisturize. The temperature in the shed should be kept at about 25 °C, which is beneficial to photosynthesis. The night temperature is 13 °C ~ 15 °C to inhibit the respiratory consumption, but it should not be lower than 12 °C, so as not to cause physiological obstacles, resulting in slow growth of the melon seedlings. In order to obtain more accumulated temperature, it can be properly ventilated when it reaches 28°C or above in the morning. It can be allowed to rise to 36°C in the short term at noon, and the greenhouse can be closed when it is lowered to 28°C in the afternoon, so that the temperature of the shed is stable at around 30°C for the night. Keep warm.
The second is the humidity management in the shed: the humidity in the greenhouse shed in the greenhouse is generally 55% to 65% in the daytime, and 85% to 90% in the night. It stays between 70% and 85% during cloudy days and 90% to 95% during the night. Insufficient humidity, reduced photosynthesis, and high humidity can cause disease.
The third is the management of fertilizer and water: in the early stage of planting seedlings, watering the seedlings and promoting the early life. After living the tree to the late stage of living, control the watering and carry out the seedlings to prevent the lengthening. After the first batch of fruit began to expand, gradually increase the amount of water. As a result, the soil moisture should be kept adequate at the peak and the soil water content should be kept at around 27%. Rainy, cold weather, avoid watering, sunny and warm days must not be short of water. Spring cucumber is generally topdressed 6 times to 8 times. Apply 6.5 kg to 9 kg of urea per acre. To apply light fertilizer, only 100 grams to 150 grams of chemical fertilizer can be added to each water. In the result period, 0.2% potassium dihydrogen phosphate solution should also be sprayed, which is beneficial to increase production. Fourth, we must guard against disease. In addition to paying attention to rotation, soil disinfection, humidity in the shed should not be too large, spray on Bordeaux can be used for downy mildew. For the powdery mildew, a 200-fold wettable sulfur powder suspension can be sprayed. For the anthrax disease, 80% of the sensitized zinc 800 times solution can be applied, and all have good effects.
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