Winter spring zucchini planting work has begun. In order to maintain the high yield and quality of zucchini in the winter with lower temperature, it is necessary to work hard on the cultivation management after planting. The main points are as follows: 1, temperature management: maintain high temperature and high humidity after planting, promote slow seedlings, 28 to 30 degrees Celsius during the day, 18 to 20 degrees Celsius at night, no more than 30 degrees Celsius. After the seedlings are slowed down, the roots should be controlled to prevent the plants from growing, 22 to 25 degrees Celsius during the day, when the temperature exceeds 25 degrees Celsius, the wind is closed at 20 degrees Celsius, 10 to 15 degrees Celsius at night, and 8 to 10 degrees Celsius when exposed in the morning. It is conducive to the early formation and opening of female flowers, and can effectively control the length of the child. When the root melon begins to expand, the temperature is raised appropriately, 23 to 28 degrees Celsius during the day, 12 to 17 degrees Celsius at night, and the lowest temperature is above 11 degrees Celsius. When the spring temperature is high, it is necessary to increase the amount of air release. The temperature in the shed should not exceed 30 degrees Celsius during the day, and the nighttime outside temperature should be higher than 12 degrees Celsius. 2, fertilizer management: when the root melon begins to expand (10 cm) should be timely watering, combined with watering can be applied to the fertilizer, along with 15 to 20 kg of potassium dihydrogen phosphate per acre. When the second melon is inflated, the second top dressing is carried out, and 20 to 25 kg of urea per mu is applied. After each half-month, the topdressing will be carried out once every half month. 3. Illumination: After uncovering the grass in the morning, wipe the dust and grass with a mop. On cloudy days, the grass is still to be uncovered and the scattered light is accepted. It is best to hang the reflective curtain at the center pillar. 4, artificial pollination and hormone treatment: zucchini generally can not be single strong, in winter and early spring, there are basically no pollinators in the greenhouse, artificial pollination must be carried out. It is usually carried out between 8 and 11 am. In addition, there are fewer male flowers in winter and less pollen when the temperature is low. The use of hormone treatment is a technique to prevent falling flowers and fruits. Commonly used is 2,4-D, the treatment time is 8-10 in the morning, the concentration is 100-200 mg/kg in winter, and 25-30 mg/kg in spring. It is applied between the base of the newly opened female flower and the base of the corolla. It can also be applied to young melons, but not to the stems and leaves of plants. In order to prevent repeated treatment, red pigment was added to 2,4-D. If 0.1% 50% keeling wettable powder is added to the prepared solution, the occurrence of gray mold can be effectively prevented. 5. Plant adjustment: greenhouse squash greenhouse has a long growth period, large leaves and many leaves. Although most of them use dwarf varieties, the number of sections is large, which also affects ventilation and light, and is prone to disease. Therefore, it should be hung in time. vine. The method is basically the same as that of cucumber. Combine the vines and remove the lower old leaves and diseased leaves. Generally, a melon with about 2 leaves is kept, and the topping is performed about 30 days before the pulling. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
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