Autumn and winter leek flowers are generally planted at the end of August to the beginning of September. The management points after planting are now described as follows:
After planting, plunge 1 to 2 times with discretionary seedlings, cultivating and weeding 3 to 4 times for seedlings. After 7 to 10 days, the weather turns cold. Cauliflower grows into a vigorous growth period. It is necessary to fertilize the water and combine it with water. 15 kg or 800 to 1,000 kg of mature feces dilute, alternating use, a total of 2 to 3 times, no fertilizer after the shed.
Watering to keep the soil moist, especially in the vigorous growth period and flower bud hypertrophy period, can not be short of water, usually 5 to 7 days watering once in mid-October, the temperature gradually decreases, to control the amount of water and watering times .
Before mid-October, scaffolding was prepared and a plastic film (preferably without a drip film) was prepared. In late October, the shed was covered. Before and after the start of the winter, the grasshoppers are stamped and covered in order to meet the water requirement during the entire shed period.
The key to post-stamp management is temperature and air humidity. With high temperature and high humidity, not only plants are prone to infection, but also they have small balls, low yield, and poor quality. Therefore, during the initial period of the buckle, it is necessary to grasp the large ventilation measures for early opening and closing of the tuyere. With the gradual decrease in the outside temperature, the ventilation time and ventilation volume should be reduced accordingly. Generally, when the temperature reaches 15°C in the morning, the ventilation is started, and the control of the greenhouse temperature is not effective. After more than 25°C, ventilation is gradually reduced in the afternoon and the air outlet is closed when the temperature of the shed is lowered to 15°C. If it is cold or cloudy, it is necessary to expose the grass cover early, without ventilation or with less ventilation.
Generally harvested at the end of November to early December, should not be delayed so as to avoid freezing damage.
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