Three points to manage the heading period of autumn Chinese cabbage
The heading period is the period when the outer leaves of autumn Chinese cabbage grow slowly, the leaf bulbs grow rapidly, the daily growth rate is ******, and the nutrient accumulation is large. The main points of management during this period are to water and fertilize scientifically, keep the soil moist, and pay attention to bundling vegetables to protect the ball to ensure the healthy growth of Chinese cabbage.
One, catch ball fertilizer
In the heading stage of autumn Chinese cabbage, top dressing is generally required 2 to 3 times. For the first time, 10-15 kg of urea per mu is applied at the beginning of heading to promote the rapid increase of leaves. For the second and third top dressing, 10 kg of urea per mu was applied in the middle of heading to promote the rapid growth of heart leaves. It can also be combined with foliar fertilization, with 0.1%～0.2% potassium dihydrogen phosphate sprayed once every 7-10 days, and sprayed 3 times. The foliar topdressing is carried out after 3 o’clock in the afternoon, which is beneficial to improve the fertilizer. Utilization rate.
Two, scientific watering
Keep the soil moist during the heading stage of autumn Chinese cabbage, which is conducive to root growth and nutrient absorption. Generally, water once every 5 to 7 days, and stop watering until 7 to 10 days before harvest to avoid excessive water content of Chinese cabbage, which is not conducive to storage.
Three, tie vegetables to protect the ball
Bunch of vegetables can protect autumn Chinese cabbage leaf balls from freezing damage, increase yield, reduce losses, and facilitate storage. After tying vegetables, photosynthesis of leaves will be affected, tying vegetables will affect the yield too early, and they will be vulnerable to freezing damage too late. Bunching of vegetables is generally carried out 15 days before harvest. The rosette leaves are lifted up to wrap the leaf balls, and they are tied up after being wetted with straws such as sweet potato vines, millet straws, and straws.
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