Three key aspects of cucumber
First, soil preparation for fertilization should be based on well-rotted compost made from straw, cow and horse manure, chicken manure, and pig manure. Before laying the plastic film, it's important to apply diluted manure. When applying the ring fertilizer and fecal dilution, it's recommended to mix in fresh chopped straw, fully cooked wheat bran, rice husks, and used edible mushroom growing media. A typical amount of farmyard compost is 3000 to 5000 kg per acre, along with 100 kg of superphosphate or 30 to 50 kg of DAP, or 40 to 50 kg of biological fertilizer, or 200 kg of cake fertilizer. After spreading the materials evenly over the field, till the soil twice, then dig ditches according to row spacing. Place the remaining fertilizer into the ditches, mix thoroughly with the soil, water the ditches, and level the bed. For winter cucumber cultivation, large and small ridges are usually used, with small rows spaced at 80 cm and large rows at 100 cm, allowing for approximately 3300 to 3500 plants per acre.
Second, planting. 1. Seedling selection. It’s best to choose seedlings on a sunny day. Seedlings should be sorted by size—large, medium, and small—and transported to the side of the planting ridge. From the overall perspective of the greenhouse, larger seedlings should be placed on the east and west sides, as well as the front, while medium-sized ones go in the middle. Within each row, place the largest seedlings at the front and the smaller ones at the back, ensuring even growth and uniformity later on. 2. Covering the film. After planting, plan carefully to encourage deep root development. The plastic film should be covered about 15 days after planting to help retain moisture and warmth.
Third, when cucumbers grow to about 40 to 50 nodes, they typically start to bear fruit. Due to the limited height of the greenhouse, it's necessary to train the vines downward. To make this easier, use nylon strings, preferably individual ones for each plant. The nylon lines should be installed higher up to allow for easy replacement during renewal. Regularly remove yellow, diseased leaves, lateral branches, tendrils, male flowers, deformed fruits, and diseased fruits. Be careful not to remove more than three leaves at a time, and ensure each plant maintains around 20 functional leaves for optimal photosynthesis and growth.
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