Chungan No. 2 is a new cabbage variety selected from Zhenjiang Agricultural Sciences in the hilly area of ​​Jiangsu. This species grows vigorously with a plant height of 32 cm, a degree of development of 57 cm, a leaf color grayish green, and medium leaf wax; a nearly round leaf ball, a single ball weighing 1.2 kg, a tightly knotted ball, a ball height of 16.2 cm, and a width 18.7 centimeters, center column length 6.5 centimeters, width 2.8 centimeters, taste brittle and sweet, good commercial; antiviral disease and black rot, cold resistance, in case of short-term -8 °C low temperature will not be frost damage, but also not easy to twitch. It is suitable for cultivation of wintering spring cabbage in open areas in the Yangtze River basin and its south areas. It is generally planted in early October and harvested from mid-April to May in the following year.
Cultivate strong seedlings to choose high-dwelling, well-drained field crops. Before sowing, combined with deep turning to apply organic fertilizer, fertilizer is generally not applied. During the seedling period, plastic films and shade nets are covered according to the weather conditions to prevent heavy rain showers. Timely seedlings, Dingmiao.
Planting and field management The seedling age is 40 to 45 days when transplanting, spacing 45 to 50 cm, spacing 40 cm, planting 3300 to 3700 per acre. Before planting, combined with deep-foliation application of basal fertilizer, per acre applied maturity organic fertilizer 2000 to 3000 kilograms, superphosphate 50 kilograms, urea 10 to 15 kilograms. The high-desert, well-drained sand land is flattened to facilitate watering; low-lying, sticky wet fields are suitable for sorghum and flood control. After the planting, the seedlings were checked and supplemented to ensure the seedlings. The exposed winter spring cabbage is dominated by the “pre-control and post-accelerated†management. Before winter, it is generally not fertilized with water. The weather gradually warms up after mid-February and the fertilizer and water management is strengthened in a timely manner. The ball is controlled during the mature period of the leaf ball to prevent the ball from being caught in time due to the failure of harvesting. After entering April, attention was paid to the control of cabbage caterpillars and other pests.
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