Winter greenhouse cucumber management points

Winter greenhouse cucumber cultivation points:

1. Cultivate high-quality cold and strong seedlings. The cold-tolerant species mainly include Ony, a thornless cucumber seed. Its characteristics: The species is introduced from the Netherlands, all females, thornless cucumbers, unlimited growth type, early maturity, strong growth and strong growth, the main vines, melons, short internodes, 1-2 melons per section, there are melons, The melon grows about 16 centimeters long. It has strong fruit-making ability, dark green color, luster, sweet taste, high yield, strong cold resistance, and high fruiting rate under high temperature and high humidity conditions. Strong resistance to stress, high resistance to downy mildew, powdery mildew, blight and virus diseases and other pests, no dead trees phenomenon, suitable for autumn delay, wintering, early spring and over-season cultivation. There is also Shengdong No. 3 - cucumber seeds. The characteristics of the variety: a hybrid generation, strong plant growth, medium leaves, the main cranberry melon, melon yards, melon strips grow faster, do not rest, continuous sitting melon ability, straight strips, shallow skin Green, sweet, melon about 35 cm long, low rate of malformed melon, high rate of commercial melon, single melon weight of about 200 grams, strong disease resistance, both parents are resistant parents, high resistance to wilt, downy mildew, corner Spot and powdery mildew, resistant to low temperature, low light, winter cultivation of about 25,000 kilograms per mu, harvest time of up to 200 days or more, suitable for greenhouse cultivation in early spring, autumn extension and overwintering cultivation.

2. Fertilizer management. In mid-to late February, most of the greenhouses in winter greenhouses enter the peak period of producing melons, and the demand for fertilizer and water also gradually increases. Therefore, the cucumber dressing should be carried out after the end of February. Generally, 20 kg of urea and potassium dihydrogen phosphate are applied per acre. 5~8 kg or potassium sulfate compound fertilizer 30~35 kg, once every 20 days. According to the situation, in combination with watering, the human fecal urine and beancake water that are cooked with water are used. At the same time, every 10 to 15 days, combined with disease prevention and control, extra-root topdressing can be sprayed with 0.2% potassium dihydrogen phosphate solution or with sugar, urea, potassium dihydrogen phosphate, water at a ratio of 1:1:0.2: 100% of the formulated sugar nitrogen solution or 500 times of Pendebao nutrient solution. The addition of carbon dioxide gas fertilizer at the end of February and early March can significantly prevent premature plant failure, increase stress resistance, and prolong the outcome period. In the middle and later stages, the number of watering and watering should also increase, but - according to the actual situation, in order to prevent the ground temperature from falling too much, it is advisable to keep the ground temperature after watering not lower than 15 °C. Prevent seedling leggy. In addition to measures such as promptly revealing cover, increasing ventilation, prolonging ventilation time, increasing light intensity, and performing low-temperature exercise, chlorella can be used to inhibit chilling, and chlormequat can enhance the cold resistance and disease resistance of seedlings. Note that the concentration should not be too large.

3. Temperature regulation. After March, the outside air temperature gradually increased. In this period, we should make full use of uncovering the straw curtain and opening and closing the ventilation opening to adjust the temperature inside the shed so that the shed temperature is maintained at 26°C~30°C during the day and 12°C before the curtain is pulled in the morning. ~14°C to facilitate normal cucumber growth. Pruning vines: By pruning vines, so that the plant height is maintained at about 1.3 meters, south low north high, in order to facilitate the light. The specific method is to crush the base of the stem of the cucumber and lay it on the ground so that the growth point of the cucumber plant is at a height of about 1.3 meters. The top of the cucumber in the entire shed is basically in the same plane and the old leaves and diseased leaves are removed. The strain retains more than 20 effective leaves. Reasonable picking: the finished melon generally retains 2 to 3 melons per plant, which is suitable for growing large melon strips.

4. Disease prevention and control. The main diseases of cucumber during this period are downy mildew, keratoderma, gray mold, and powdery mildew. The pests mainly include roundworm, whitefly, and spotted fly. The above pests and diseases should be mainly prevention, comprehensive prevention and treatment. In the nursery management, a chemical control treatment is performed once a week, and a wide-spectrum bactericide such as chlorothalonil, carbendazim, and chlorpyrifos is used for rotation. In the rainy weather, it is recommended to use a fumigant instead of a spray control, which can achieve better results. .

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