Greenhouse Gifts Watermelon Management Five Points
Gift watermelon (small watermelon) is the new darling of the watermelon market. It is better to cultivate and scaffold plants in greenhouses. The whole growth period is 80 to 90 days, and flowering to maturity is about 25 days. According to practice, the management points are briefly described below.
Environmental conditions small watermelon good temperature, good light, at 25 ~ 30 °C, day and night temperature difference of 8 ~ 14 °C under conditions of good growth; fear of drought, but in the melon development period, the need for more water, should pay attention to watering; lifetime need fertilizer More, avoid chlorine; should grow in sandy soil with rich soil and rich organic matter.
Shed temperature management in early spring greenhouse cover cultivation, during the period of planting after the seedlings, during the daytime in the shed to maintain 24-35 °C, at night not less than 15 °C, moderate temperature after the slow seedlings, during the day 20 ~ 30 °C, at night not less than 14 °C . After sitting on the melon, increase the temperature appropriately, during the day, 25-28°C and at night not less than 16°C.
One-time application of base fertilizer for fertilizer and water adjustment, 5,000 kg of organic fertilizer per mu, 30 kg of potassium sulfate, and 50 kg of superphosphate. After mixing, apply into the ditch. Mix thoroughly with deep pour to fill the ridges. . From the planting to the end of harvest, no fertilizer is applied. The entire growth period requires irrigation only 3 times, and the amount of water should be large. After the first time the seedlings are slowly growing, the second time the seedlings are growing, and the third time when the melons grow to the size of the eggs. Can not be watered during the melon period so as to prevent melons from growing up.
Prevention of cavities and melons cracking, gaps, empty, gift is a common physiological disease of watermelon, from the low-section sitting melon, partial nitrogen fertilizer, stems and leaves prosperous, transferred to the nutrition caused by melon. Therefore, as long as the application of phosphorus and potassium fertilizer, appropriate pruning, from the base to the tenth section without leaving side branches can be prevented.
Timely collection of pollination and retention of the melons. Insert a 50 cm bamboo piece next to the pollination melon and paint the top with a color. Change the color every 2 days for pollination dates. Afterwards, according to the number of mature days of the species, the samples shall be cut and checked and timely harvested according to the color standard. When the watermelon is half the size, use a white foam packing material to make a melon mat to prevent the formation of yin and yang.
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