The nodule period is the period when the outer leaves of autumn cabbage grow slowly, the leaf ball grows rapidly, the daily growth is largest, and nutrients are accumulated in large quantities. The management points of this issue are scientifically watered and fertilized to keep the soil moist and ensure the healthy growth of autumn cabbage.
First, pursue ball fat. Autumn Chinese cabbage usually requires top dressing 2 to 3 times, the first time in the early ball, Mu urea 10 to 15 kg, and promote rapid increase in leaves. The second three times in the mid ball, urea applied 10 kilograms of urea to promote the rapid growth of the heart. Can also be combined with foliar fertilizer, with 0.1 ~ 0.2% potassium dihydrogen phosphate spray every 7 to 10 days, even spray three times, the best foliar dressing after 3 pm, will help improve fertilizer utilization.
Second, science watering. During the ball stage of autumn cabbage, the soil is often kept moist, which is conducive to root growth and nutrient absorption. Usually 5 to 7 days water once, until the harvest before 7 to 10 days to stop watering, so as not to contain a small amount of cabbage is too large, is not conducive to storage.
Third, bundles of vegetables to protect the ball. The cabbage can protect the autumn cabbage leaves from freezing injury, increase production, reduce losses, and facilitate storage. The bundles of vegetables are generally carried out 15 days before harvest. The rosette leaves are lifted to hold the leaf balls and bundled with sweet potato vines, millet stalks and other crop stalks. Photosynthesis of the leaves of the bundles is affected later, and the cabbages affect the yield prematurely and are susceptible to freezing damage.
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