The so-called “Winter Spring Cabbage,†which refers to the area south of the Yangtze River Valley, was sown in the early autumn and late winter (from late October to mid-February). It was wintered with young seedlings and harvested in the spring of April-June in the second year of the year. Kind of early maturing form.
First, the choice of varieties: selection of winter and spring cabbage varieties is very important, there must be a certain cold resistance, strong winter, not easy to bolting in advance, but also to mention the morning market, so we imported foreign imports of seeds Alice and stone II Such as the number of cabbage varieties, can do winter and spring cultivation, performance is very good.
Second, the main features of varieties:
1, belong to medium-maturing or medium-maturing varieties, the reproductive period of about 65-80 days, a single ball weight 1.5-2.0kg;
2, flat ball, ball tight, crack ball;
3, has a certain cold resistance, strong resistance, good disease resistance, strong winter;
4, good merchandise, spherical appearance, excellent quality, wide application, easy cultivation, high yield, good efficiency;
Third, the appropriate range: suitable for most of the south of the Yangtze River Valley to do winter and spring cultivation, sowing in late October to mid-February, in the following year in late April to June harvest.
Fourth, cultivation techniques points: Cabbage belongs to the green body vernalization crops, that is, after the plant grows into a certain size, a certain temperature range (2-10 degrees), a certain time through the vernalization and bolting. Therefore, winter and spring cultivation of cabbage, cultivation techniques to prevent early bolting, to achieve the purpose of high yield.
a) Suitable sowing time: Generally winter and spring cabbage, suitable sowing date is from late October to mid-February, sowing too early, calendar seedling age is long, seedling age is large, easy bolting, so the appropriate sowing time late seeding is not easy Sowing; According to the local market time, choose sowing time and seedlings, early sowing should be in open field, late sowing can use small sheds or other protection methods can be seedlings;
b) Appropriate seedling age: winter and spring cultivated cabbage is in the form of wintering seedlings. Once it is not well mastered, the seedlings are too large, there may be bolting, so generally the calendar seedling age is about 40-45 days (depending on the temperature conditions ), Physiological seedling age, generally 5-6 leaves, stem diameter does not exceed 0.5-0.6cm, short internodes, the maximum leaf width does not exceed 6cm, thick leaves, green leaves, choose strong seedlings instead of large seedlings, can Avoid bolting;
c) Seedling raising: Winter and winter cabbage seedlings are planted at the end of autumn and winter, the temperature is decreasing, the rainwater is relatively small, the nursery is 1 meter wide, the sorghum is 5-10 meters long, and the seedlings are usually sieved with fine soil, and the bottom water is poured. After sowing, cover the thickness of 0.5cm, 3-4 days can be unearthed, if there is rain, you can add coverage. Seedlings of the two leaves of the seedlings are one seedling at a time. The seedlings are separated by 10 cm. The purpose of the seedlings is to maintain the size of the seedlings. The seedling age is about 40-45 days. When the seedlings grow to 5-6 leaves, they can be planted; With appropriate delay, seedling age can be 35-40 days;
d) Colonization: The fertile plots of the cruciferous crops that were not planted were selected from the colonization plots, and the plots were deeply ploughed with fine quality organic fertilizer 4000 kg, compound fertilizer 30 kg, spacing 45*45, planting 3400-3600 plants per acre;
e) Water and fertilizer management: After planting, the temperature is low, the seedlings are small, and the growth is small. Generally, no fertilizer is needed for watering. In the spring of the second year, after the temperature rises, the topdressing watering is started. The spring temperature is low, and the water is generally not flooded. , With water application of urea about 15kg, as the temperature rises, into the late Rosette late period, the fertilizer and water increase, apply about 20kg of compound fertilizer, or 25-30kg per acre urea, combined with a certain plant ash, even with 2-3 Water, from the end of April to the beginning of June, will be listed on the market.
f) Pest control: Brassica oleracea cultivated in winter and spring, with few diseases, mainly cabbage caterpillars and buds, can be controlled;
g) Main considerations:
1, winter and spring cabbage, control the calendar seedling age, sowing time is not easy to late early, sowing date;
2, control the physiological seedling age, the main nursery fertilizer and water should not be too large, too full, the temperature should not be too high, control the age of the seedlings, to prevent the winter warm spring cold, large seedlings easily vernalization bolting;
3, when planting, before the winter to apply high-quality organic fertilizer-based delay, in spring mainly fast-acting fertilizer, water and fertilizer management principles, winter control spring promotion.
In short, winter and spring cabbage cultivation, according to local climatic conditions and cultivation habits, according to local conditions and flexible control, in order to achieve our cultivation purposes.
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