Detailed Explanation of Key Techniques for Winter Cucumber Cultivation

First, build the greenhouse before November, and at the same time prepare the plot to be planted, including disinfection, fertilization and ridging. Then transplant the seedlings. After transplanting, keep the greenhouse temperature at around 30 degrees, and allow the seedlings to recover after half a month. Then control water and fertilizer application properly, and do a good job of pest and disease prevention and control.

Note the following when fertilizing winter cucumbers:

1. Fertilize according to the different growth stages of cucumber

During the seedling stage of cucumber, normal nutrient absorption must be ensured, the amount of fertilizer applied should be small, and the concentration should be low; during the full fruiting stage, the amount of fertilizer applied should be large, and the concentration should also be somewhat higher. Some farmers use 200 kg of diammonium phosphate at one time, hoping to achieve high yield by using diammonium alone, which is unscientific.

2. Fertilize according to soil conditions

If topdressing with irrigation water, the amount used should depend on the soil conditions. When the soil is relatively dry, the concentration should be low, and the amount of topdressing should be somewhat larger. When the soil is moist, the concentration should be higher, and the amount of fertilizer used should be smaller. Sandy soil has poor water- and fertilizer-holding capacity, so apply small amounts multiple times; clay soil has strong water- and fertilizer-holding capacity, so the number of fertilizer applications should be fewer, but each application should be somewhat larger.

3. Fertilize according to weather changes

Because temperature affects the root system's tolerance to fertilizer concentration, when the temperature is high, the fertilizer concentration should be low, otherwise root burn is likely to occur; when the temperature is low, the concentration should be somewhat higher. Therefore, fertilization should be carried out according to weather changes.

4. Adopt different fertilization methods according to different fertilizer types

When topdressing chemical fertilizer, furrow application should be adopted to concentrate the fertilizer effect, and soil should be covered promptly after application to prevent nutrient volatilization from reducing fertilizer efficiency. When topdressing nitrogen fertilizer, it should be applied more than 10 cm away from the plant roots and stems to avoid root burn. Combining topdressing with irrigation can improve fertilizer efficiency.

Winter cucumber cultivation is an out-of-season cultivation technique. If you want to obtain high yield and high quality, you must master the techniques well.