Overwintering in greenhouses and cultivation of cucumbers

(1) Determine the appropriate sowing date and time for planting In Shandong Province of China, for example, the climate in Shandong Province is characterized by the lowest temperature in January and the average monthly temperature of -2.4°C. Light is the worst in February. There are 178.7 hours, most of the years from late December to early January have a period of low temperature and cloudy weather. According to this characteristic, in contrast to the requirement of temperature and light conditions for cucumber growth and development, in order to obtain high yields of cucumber cultivation in deep winter, strong seedlings must be cultivated when the weather is favorable, and planting seedlings should be planted in the worst weather conditions at low temperatures. At the time of arrival, the plants had deep rooted leaves and entered the initial stage of the results, reaching the age of the most resistant plants. Once the temperature and light conditions were appropriate, a large number of flowering results would be achieved. Production practices and tests have proven that planting seedlings from late September to early October, and planting from the late October to the middle of November is the most appropriate. Premature sowing, the arrival of severe winter has entered the fruitful period, easy to premature aging; too late sowing, seedlings into the winter fashion, no strong root system trophozoites, easy to cause failure, even if not fail, before the Spring Festival is also not yield.
(2) Grafting seedlings Grafting seedlings is one of the key measures for the cultivation of cucumber in deep winter. According to experiments, compared with the self-rooted seedlings, the grafted seedlings have strong growth and development, developed root system, low temperature resistance, and resistance to wilt disease, and both the previous yield and the total yield have been improved.

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