Field Management Techniques of Cucumber in Harvesting Stage
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At this point the outside temperature has started to rise, should pay attention to ventilation to adjust the temperature and humidity. Open the top wind first, and then open the crosswind, and with the outside temperature stable above 15°C, ventilate overnight. The greenhouse temperature is generally controlled at 28-32°C in the morning and not less than 15°C at night. The weather should be released in the morning on sunny days, which can effectively reduce the humidity in the greenhouse and greatly reduce the occurrence of diseases.
Second, fertilizer and water management:
By the end of the melon period, the growth of cucumbers has increased, and the amount of water needed for fertilizers has also increased significantly. Before the melon period, water is poured for 7-10 days. At the beginning of April, it entered into the melon period, beginning in April and beginning in the first 5 to 7 days in May. May 4 to 5 days pouring a water, generally with water, fertilizer, watermelon can be water period with fertilizer, each chase 50kg per acre of ammonium bicarbonate or 30kg of potassium sulfate compound fertilizer, or 500kg alternate organic fertilizer. In micronutrients, cucumbers require more boron, iron, and zinc. In the general seedling and flowering period, spray 400-500 times borax water agent. During the whole growth period, spray 2-3 times of 400-500 times of ferrous sulfate and 400-500 times of zinc sulfate, and take the spray of glucose to increase production in the season, and spray all-element leaf fertilizer late to prevent premature aging.
First, pruning:
The yellow leaves, the old leaves and the diseased leaves of the lower part of the plant are promptly destroyed. When the plant grows to the top of the greenhouse, the old leaves at the bottom of the stem are destroyed, 16 functional leaves are kept, the stem of the cucumber is dropped, and the cucumber is dropped on the ground to make the cucumber. There is still room for growth. By the end of April, it is no longer likely to fall, but topping up will promote the growth of melons.
Fourth, high temperature and high temperature stuffy shed:
1, anti-high temperature, go insider: In early April, the outside temperature gradually increased, in order to prevent the baking shed. To ventilate smoothly, you must withdraw from the inside.
2, high temperature stuffy shed: It is one of the important measures to prevent and treat diseases in greenhouses, it can be used to control downy mildew, powdery mildew, keratoderma, gray mold, black spot and other diseases. The specific method is: Before and after sunny noon, after irrigating the water, the greenhouse is closed, so that the temperature rises. When the temperature reaches 45-46°C, it maintains for 2 hours. Afterwards, it is slowly ventilated and the temperature is lowered. The thermometer mercury ball and the plant must be taken care of. The highest level is on the same level. (Note: Weak seedlings do not advocate this method)
V. Harvest:
Usually harvested once a day, in the melon period, every day to pick melon, root melon to pick early, melon grow weaker but also to pick melon early to promote the long hair. Gualou grows strong, and melons must be harvested properly late to promote melons. After each harvest, 1-2 juveniles were kept on the plants to coordinate the relationship between vegetative growth and reproductive growth.