Precocious autumn cabbage grows in a large area in the south-central region of the province. Because of the small proportion of this vegetable in the production of autumn vegetables, the time to market is earlier and the planting efficiency is higher. Here are some high-yielding cultivation techniques for early-maturing Chinese cabbage.
First, choose the best species. Precocious Qiuqiu cabbage should be selected from varieties with good precociousness, strong heat resistance, strong disease resistance, and high yield, such as small miscellaneous series varieties, early heart white and so on.
Second, timely sowing. The maturation period of early-maturing Chinese cabbage is generally 50-60 days, and it is better to go before the mid-late-maturing autumn cabbage with large planting area. 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 is suitable for sowing dates from late July to early August. It is advisable that it should be about 10 days before the start of autumn. The listing period must be ahead of the National Day.
Third, balanced fertilization. Precocious autumn cabbage is a high-yielding vegetable variety, which generally yields about 4,000 kilograms per mu, which requires a large amount of fertilizer. The principle of fertilization is to pay attention to the base fertilizer and top-dressing. Before sowing, combine high-quality farmyard fertilizer with 5000 kg of high-nitrogen and low-phosphorus potassium fertilizers and 40 kg of compound 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.
Fourth, field management. Precocious autumn cabbage in the early mid-birth period in the high temperature and humidity and rainy season, cabbage roots are shallow, not drought tolerant and not tolerant, such as severe drought and flood disaster weather will lead to the occurrence of pests and diseases, seriously affecting yield. In terms of production, we can actively improve the traditional cultivation methods, such as the use of sorghum cultivation techniques, so that when it is dry, it can be preserved, and it 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.
Fifth, disease prevention and pest control. Precocious autumn cabbage growth period under high temperature and high humidity conditions, pests and diseases occur to a higher degree, such as aphids, tobacco budworm, cabbage caterpillar, soft rot is a common pest. 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.
Six, timely harvest. Precocious autumn cabbage has a short growing period, usually about 50 to 60 days. When the leaf ball grows to a compact porcelain, the outside leaves are yellow, and the weight of the individual plant is about 2 kg. 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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