The cultivation technique of cucumber in early spring in the solar greenhouse is similar to the cultivation of winter and spring cucumber, but it has its uniqueness.
First, the early spring 茬 cucumber seedling stage is in the low temperature season, too much electric heating bed or indoor heating seedlings will be used, the seedling age will be longer, usually about 50 days. Second, the early spring 茬 cucumber has a short growth period. In the treatment of fertilizer and water, try to use large fertilizer floods to promote the growth of plants and melons. It is necessary to harvest in advance and improve production value. Early spring training generally follows these three key points:
1. Pre-culture, from cucumber planting to flowering, this period is about 15-20 days. It is basically the same as the winter and spring cucumber. When planting, it is sprinkled with water. For the prevention and treatment of diseases, the Qingye fungicide is used for rooting.
If there is a lack of water during the slow seedling period, re-irrigate the seedling water. Qingqing wild fungicide + microbial bacteria + Wofengsu 600 times rooting 1-2 times, can also be sprayed together. Cucumbers that cover the mulch film are finely loosened when the topsoil is dry and wet, and the ridges are ridged, and then the roots are controlled. The period of slow seedlings should be tightly insulated, and the cold current (tidal) should be inflated in the room. After the seedlings are slowed down, the temperature is changed. The daytime is controlled at 25---30°C, the afternoon is 20---25°C, the wind is closed at 20°C, the grass is covered at 15°C, and the first half-night is maintained at 15--17°C. In the middle of the night, 11---13 °C, the wind is released from the top in the early stage, and the wind is blown up in the late wind and waist. It is necessary to hang the vines in time, remove the male flowers, tendrils, etc., and the same as the winter and spring cucumbers.
2, medium-term cultivation, this is from the beginning of the expansion of cucumber root melon to the stage of the melon. During this period, the external temperature began to rise, and the light intensity was increased. The key point of the treatment was the large fertilizer flood, the pre-progressive output value, avoiding the peak value of the greenhouse cucumber output, and giving full play to the advantages of the solar greenhouse.
In this period, although the cold weather has passed, there are often cold currents (flows), and the selection of irrigation climate is very important. The cold current (flow) is just over, the good climate has just started, and several sunny days after irrigation, this should pay attention to the climate forecast, accurately grasp the climate change situation, fill the water with the water, and pay attention to the wind after irrigation, in order to promote growth and development, The pre-progressive production value can be appropriately improved in temperature, 25--32 °C in the daytime, over 32 °C to release the wind, 18 °C to cover the grasshopper, 16--20 °C in the first half of the night, and 13--15 °C in the middle of the night. Follow the progress of external temperature, strengthen the treatment of fertilizer and water, pour water once every 5-6 days, chase once a thin water fertilizer once every other time, each time the amount of topdressing is 667 meters 220---25 kilograms, replace urea, diammonium phosphate, potassium sulfate, etc. Application, irrigation and topdressing in the early stage of the squash, replaced by a large line;
Entering the peak of the results, the size is carried out together. It is necessary to select a sunny day for each irrigation, and increase the amount of air after irrigation. When the grass cover is uncovered, it should also be changed with the change of external temperature. The external temperature rises, the cover is removed early, and the grasshoppers are finally removed. When the external temperature is not lower than 15 °C, it will be released day and night. Close the vents on rainy days to avoid rainwater intrusion. When the plant grows to 25 leaves, the topping promotes the composition of the head back.
3, late cultivation, the main points of handling cucumber from the stage of the melon to the decline period, generally should be based on the application of potash, promote plant robust disease resistance; control pests and diseases, extend the functional life of the leaves, so that the head of the agile growth. After discovering the condition, spray with the Qingye Vegetable Set + Root, use 2-3 times for 2-3 days.
Regarding the cultivation techniques of cucumber in the solar greenhouse in early spring, the key points are discussed here, and I hope to provide some help to farmers.
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