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Shenglan watermelon cultivation technology
I. Characteristics Characteristics Shenglan is an early maturing variety. The fruit development period is about 30 days. The whole growth period is about 85-90 days. The seeds are full, the cotyledons are thick, the rate of seedling formation is high, and the plant growth is strong; the fruit is spherical and green. With dark green strips, the fruit is beautiful, with a weight of about 3 kilograms; the content of soluble solids in the center is about 12%; it can maintain high sugar content and quality during ripening at low temperature, and it is not easily deformed at low temperature; it also has low temperature. The elongation is good, the female flower is easy to open and easy to set fruit, so the cultivation adaptability is wider. Second, the cultivation points 1, extremely early and high yield protection to promote the cultivation of greenhouse cultivation in the end of January to early February sowing, the end of April to early May can be listed. Greenhouses can be planted in the middle or late February, and planted in mid-March, and covered with three membranes to prevent cold and heat and promote normal growth of seedlings at low temperatures. Shenglan watermelon can also be cultivated in late autumn. It can be planted in Jiangsu, Zhejiang, and Shanghai from the end of June to the end of July, and the greenhouse can be sown at the beginning of August. 2, reasonable close planting, three vine pruning, a multi-guarante cultivation of cultivated blue orchids colonization density of 450 ~ 600 / 667m2 is appropriate, not more than 700. The stand-type cultivation is about 1200 strains/667m2 and cannot exceed 1500 strains. After planting seedlings, when the seedlings grow to 5 or 6 true leaves, the main vine growth point is removed and three vines are used for pruning. The number of plantlets per plant is 2-3, and the second female flower of the lateral vines begins. Pollination is good. The output of 667m2 can reach more than 3,000 kg. 3. Strengthen management of fertilizer and water temperature to increase fruit setting rate and quality. As Shenglan grows vigorously, and a seedling is very fruitful and fruitful, it needs sufficient nutrients. Usually, 667 m2 needs to be used to compost 2000 kg of chicken manure. , containing three yuan (15:15:15) 50 kg compound fertilizer, potassium sulfate 10 kg. Because Shenglan f1 has a well-developed root system and vigorous growth, it is necessary to strengthen the management of water while doing the pruning work. During the fruiting period, the soil moisture is maintained at about 60%, and the suitable temperature in the shed is 25 to 30° C. during the day and 18° C. at night. After most of the plants are set up, the water must be applied in time. 7 to 10 days before harvest should be strictly controlled moisture and ban nitrogen fertilizer to improve quality and ensure the quality of melon market. 4. Pest prevention and control General cultivation in greenhouses, environmental conditions, and fewer pests and diseases, such as the occurrence of blight, thiophanate-methyl 600 times can be used to irrigate roots and timely removal of severely ill strains, lime applied to close the ward to prevent disease expansion . Locusts can be used to control the net. Small arch shed cultivation, remove the film should pay attention to the prevention and treatment of foliar diseases. 5, timely harvest, such as during the day to maintain the temperature of the greenhouse at 25 °C or more, Shenglan fruit ripening period of the first batch of melons in about 28 days; two batches of melon in about 25 days. Shenglan watermelon fruit matured when the pattern is clear, bright color, fluffy hair near the handle shed, this time should be harvested. After harvesting, the melons should be wiped clean and labeled. Strictly graded packaging, grab the morning market.