Description
1. Cultivation management
1. Growth habits
Carrots like a cold climate, the best temperature for seed germination is 15-25℃, and the germination days are about 7-10 days; the high temperature above 35℃ makes it difficult to germinate, and the delayed germination days are about 15-20 when the temperature is below 11℃. sky. The suitable temperature for the growth of carrots is 16-21 ℃, and the good conditions for taproot hypertrophy are when the daily temperature is 18-23 ℃, the night temperature is 13-18 ℃, and the ground temperature is about 18 ℃. The suitable temperature for taproot coloring is 16-20°C. If the temperature is lower than 12°C, taproot coloring will be affected. If the temperature exceeds 25°C, taproots will grow poorly and the epidermis is easy to be rough; if the temperature is above 28°C, the leaves will stop growing and disease will occur more easily. If the plant continues to grow at a temperature below 10°C, flower bud differentiation is extremely easy to occur.
2. Variety introduction
(1) Xinheitian Wucun: The root length is 18 cm, the root diameter is 4 cm, the leaf shape is medium and large, the root is conical, the color is bright red, the heart is small and not obvious, the skin is smooth, the quality is good, and the yield is high, per 0.1 hectare The output is 3,000 to 4,000 kg, and the sowing period is from late July to late September. This variety is relatively difficult to store and is mainly supplied for fresh sale.
(2) Five inches: root length 15-20 cm, root diameter 3-4 cm, orange-red color, smooth outer skin, slightly larger heart, good root regularity, small leaf shape, dark green color, good quality, high yield, The yield is 5,000 to 6,000 kg per 0.1 hectare. This variety is easier to store. The sowing period is from October to January. It is mainly used for refrigeration and for export.
(3) Baby carrots: The roots resemble sausages, the flavor is sweet and delicious, the growth days are about 70 to 80 days, and the yield is 2,000 to 3,000 kg per 0.1 hectare. It is suitable as a cultivated crop in paddy field = rice field.
3. Field management
(1) Interpolation: After sowing, when the plants are in 4 to 5 leaves, the distance between each plant is 10 cm, and one plant is left in each hole to remove dense seedlings and impure varieties.
(2) Irrigation and drainage: After sowing, the soil should be kept in a proper dry and wet state when the taproots begin to grow and develop after 2-3 leaf leaves of the plant. Excessive dryness or wetness can easily cause root cracking, so the soil water capacity in the field 60-70% moisture is suitable. And do not irrigate before harvest, so as not to affect the storage quality of taproot, especially when it rains, pay attention to drainage.
(3) Cultivation and soil cultivation: light cultivation and soil cultivation shall be carried out within 50 days after the seed germination, and the soil shall be cultivated to the root shoulder at 65-70 days after germination to prevent the bare roots from turning green due to sunlight and causing lignification. Cause quality damage.
