Choosing the superior species of early-maturing Chinese cabbage should be selected with good precociousness, strong heat resistance, strong disease resistance, and outstanding yield.
Timely sowing of early-maturing Chinese cabbage is generally 50 to 60 days, and it is better to go to the middle of late-maturing Chinese cabbage before planting. If sowing is too early to induce pests and diseases, the sowing date will be too late, which will lead to delay in the market and lose the significance of early cultivation. Precocious autumn cabbage suitable sowing date is in early August, about 10 days before the beginning of autumn is appropriate, the listing period to catch up before the National Day.
Balanced fertilization Premature autumn cabbage is a high-yielding type of vegetable, generally yielding about 4,000 kilograms per mu, which requires a large amount of fertilizer. The principle of fertilization is to reapply basic fertilizer and apply topdressing appropriately. Before sowing, combine high-quality 5,000 kg of farmyard fertilizer and 40 kg of high-nitrogen and low-phosphorus potassium fertilizer. Former Qiang is best for uncultivated cruciferous vegetables. If the plots grow vegetables for many years, 2~3kg of biological bacterial fertilizer should be applied per acre, which can improve soil conditions and enhance the ability of cabbage to resist pests and diseases.
Field management Early maturation Autumn cabbage mid-birth period In the high temperature, high humidity and rainy season, cabbage roots are shallow, and they are not tolerant to drought and drought. If serious droughts and flood disasters occur, pests and diseases will occur, which will seriously affect yield. In terms of production, traditional methods of planting can be improved, and sorghum cultivation techniques can be used to ensure that the drought can be preserved and the water can be drained. Precocious autumn cabbage should be planted on-demand, with 3 to 4 seeds per hole, and twice-marrowed seedlings. After the seedlings are strictly controlled, the seedlings will grow for about 10 days. After entering the rosette stage, the management of fertilizer and water will be strengthened. In the early stage of the rosette, 20 kg of urea or nitrogen and potassium fertilizers will be topdressed with water, and 20 kg of urea will be topdressed at the end of the ball. During the nodule period, the soil is dry and wet, ensuring adequate water supply and increasing production.
Early stage of disease prevention and treatment The early growth period of Chinese cabbage is under high temperature and high humidity conditions, and the occurrence of diseases and insect pests is relatively high, such as aphids, tobacco budworms, cabbage caterpillars, and soft rot. For the aphids can be used imidacloprid 1000 times spray, tobacco budworm, cabbage caterpillar and other insect pests use high efficiency cypermethrin 1500 times spray. Chinese cabbage soft rot occurs extremely frequently in high-humidity environments. Streptomycin can be used for spraying prevention at the early stage of the disease. It is necessary to remove the roots by deep roots, and apply lime to prevent bacteria around the diseased holes. spread.
Timely Harvest Early maturation Autumn cabbage has a short growth period, usually around 50 to 60 days. When the leaf ball grows to a compact porcelain and the outside leaves are yellow, the weight of a single plant is about 2 kg, and it can be harvested. When harvested, use a machete or a kitchen knife to cut down from the base of the cabbage, remove the old leaves, diseased leaves and yellow leaves outside, and retain two or three leaves on the outside of the leaf ball to prevent mechanical damage to protect the leaf ball.
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