Spring Cucumber Planting Times
Spring cucumbers are cucumbers that are raised in the winter and harvested in the spring. The appropriate calendar age for planting spring cucumbers is forty to fifty days with a physiological seedling age of four leaves and one heart. If calculations are based on calendar age, seeding will occur forty to fifty days prior to planting. The length of physiological seedling age is related to the method of nursery. Fifty to fifty-five days are required to grow seedlings in sunbeds or solariums; forty-five to fifty days in heated greenhouses; and forty-five days in greenhouses with electric heaters.
Spring cucumber planting method
1, seedling management
Spring cucumber seedling during the low temperature season, according to the seedlings of different periods of temperature requirements for temperature management. To pay attention to the changes in the ground temperature of the seedbed, in the low temperature when the soil heating measures. In addition, in its nursery period is short sunshine, light intensity is weak in winter, so it is necessary to uncover thatch in time to increase the light time.
2, water and fertilizer management
After each watering should be hoeing, loosening the soil, improve the ground temperature, and promote the development of the root system. Waiting for the cucumber to slow down after the seedling to many times plowing. Root melon to sit after the fertilizer, can open the furrow into the rotted, pounded fine dried dung or rotted dry chicken manure. After the melon, appropriately increase the frequency of watering. Melon bloom, the plant's nutrient growth and reproductive growth have entered a stage of exuberance, the amount of fertilizer greatly increased, in general, should be 1-2 days watering 1 water, to early morning or evening watering is appropriate. But also chasing fertilizer, generally every 7-10 days to chase 1 time, the hot summer season, pay attention to drainage, in order to prevent root rot.
3, bracket leaf picking
Cucumber vine that is to be bracketed. More herringbone frame. In the plant height of 25cm or so when tied trailing, and then every 3-4 leaves tied 1 time. When the plant stem climbed to the top of the frame, it is necessary to timely centering, to promote the occurrence of lateral vines, lateral vines to see the melon after leaving 2-3 leaves centering. To the main vine melon varieties, the stem side vine should be removed in time. Melon late to remove diseased leaves, old leaves, improve ventilation and light conditions.
4, pest control
In addition to paying attention to crop rotation, soil sterilization, shed humidity should not be too large, the mildew can be sprayed with Bordeaux liquid. Powdery mildew can be sprayed 200 times wettable sulfur powder suspension. In addition, attention should be paid to the prevention and control of wilt, mildew, melon aphid, yellow melon, melon fly and other pests and diseases. Spring cucumbers are generally planted in January after the harvest, harvesting should be appropriate early harvest to improve yield.
Cucumber growth habit
1, temperature: cucumber like warm, intolerant of cold. The fertile temperature is 10 to 32 ℃. General daytime 25 ~ 32 ℃, 15 ~ 18 ℃ at night the best growth; optimal ground temperature of 20 ~ 25 ℃, the lowest is about 15 ℃. The optimal day and night temperature difference of 10 ~ 15 ℃. Cucumber high temperature 35 ℃ photosynthesis is poor, 45 ℃ high-temperature obstacles, low temperature -2 ~ 0 ℃ freezing, if low-temperature refining can withstand the low temperature of 3 ℃.
2, light: South China-type varieties of short sunlight is more sensitive, while the North China-type varieties of sunlight length requirements are not strict, has become a sun-neutral plants, its light saturation point of 55,000 lux, light compensation point of 1500 lux, most varieties of 8 to 11 hours of short sunlight conditions, good growth.
3, water: cucumber production, water demand. Suitable soil humidity is 60 to 90%, the seedling period should not be too much water, soil humidity 60 to 70%, the results of the period must be supplied with sufficient water, soil humidity 80 to 90%. Cucumber suitable air relative humidity of 60 to 90%, air relative humidity is too large is easy to develop, resulting in yield reduction.
4, soil: cucumber like wet and do not tolerate flooding, like fertilizer and do not tolerate fertilizer, it is appropriate to choose a fertile soil rich in organic matter. Generally like pH 5.5 to 7.2 between the soil, but to pH 6.5 best.