Choosing the superior seed early-maturing and autumn cabbage should choose varieties with good early maturity, strong heat resistance, strong disease resistance and high yield.
The growth period of early-maturing early-ripening autumn cabbage is generally 50-60 days. It is better to go ahead in the mid-late ripening autumn cabbage with large planting area. Premature sowing is easy to induce pests and diseases, and the sowing date is too late, which will delay the listing period and lose the meaning of early maturing cultivation. The suitable sowing date for early-maturing autumn cabbage is early August, and about 10 days before the beginning of autumn, it is appropriate to go before the National Day.
Balanced fertilization Early-ripening autumn cabbage is a high-yielding vegetable variety, generally about 4,000 kg per mu, and the demand for fertilizer is large. The principle of fertilization is to apply heavy fertilizer and appropriate topdressing. Before planting, combined with 5,000 kg of high-quality farmyard manure and 40 kg of high-nitrogen, low-phosphorus and potassium-type compound fertilizer. It is best to use a plot of cruciferous vegetables that has not been planted. For example, if the plot is planted for many years, it is necessary to apply 2 to 3 kilograms of biological fertilizer per acre to improve soil conditions and enhance the ability of cabbage to resist pests and diseases.
In the field of high-temperature, high-humidity and rainy seasons, the roots of Chinese cabbage are shallow, and they are not drought-tolerant and drought-tolerant. In the case of severe drought and catastrophic weather, pests and diseases will occur, which will seriously affect production. In production, the traditional cultivation method can be improved, and the sorghum cultivation technology can be used to ensure that the drought can be protected and the water can be drained. Early-ripe autumn cabbage should be planted on-demand, with 3 to 4 seeds per hole and twice in between. After the seedlings are strictly controlled, the seedlings will be controlled for about 10 days. After entering the rosette period, the key fertilizer and water management will be strengthened. In the initial stage of the rosette, 20 kg of urea or nitrogen and potassium fertilizer will be applied in combination with watering, and 20 kg of urea will be applied in the peak of the ball. In the ball-forming period, the soil is dry and wet, ensuring sufficient water supply and increasing production.
The growth period of early-maturing autumn cabbage is high temperature and high humidity, and the occurrence of pests and diseases is high, such as aphids, tobacco budworms, cabbage caterpillars, soft rots. For aphids, it is possible to spray with imidacloprid 1000 times solution, and insects such as tobacco budworm and cabbage caterpillar are sprayed with beta-cypermethrin 1500 times solution. Chinese cabbage soft rot is extremely common in high-humidity environment. In the early stage of the disease, it can be controlled by agricultural streptomycin spray. Serious rooting should be taken out of the field and buried deep in the field, and the lime can be spread around the diseased area to prevent pathogens. spread.
The harvesting period of early-maturing autumn cabbage is short, generally about 50-60 days. When the leaf ball grows to compact porcelain, the outer leaves are yellow flowers, and the weight per plant is about 2 kg, it can be harvested. When cutting, use a machete or a kitchen knife to cut off the base of the cabbage root, remove the old leaves, diseased leaves and yellow leaves outside, and keep two or three leaves outside the leaf ball to prevent mechanical damage to protect the leaf ball.
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