Purple carrots, formerly known as Purple 68, are bred by bejo in the Netherlands, and have a purple exterior, purple core, and occasional yellow color. Purple carrots are used as a raw material for extracting edible red pigments, as well as for making kimchi and pickles.

Purple carrot cultivation technology

A, sowing

1, sowing time: according to the purple carrot growth in different areas of the temperature, and combined with the local meteorological information, can be carried out;

Generally, the natural appropriate sowing period in mid-August to late September, the most suitable sowing period for the mid-August. Sowing too early, on the one hand, high temperature, drought affect the emergence of seedlings, on the other hand by the impact of high temperature and drought, fleshy roots thick skin, poor quality, low yield; too late sowing, emergence, tuber growth, yield due to the low temperature is seriously affected, therefore, in mid-August after the rain, sowing, the emergence of seedling is guaranteed, and it is easier to get high yield.

2, sowing method: timely sowing, improve land utilization, the use of baking tobacco land set planting purple radish way to hit the pond spot sowing.

3, sowing specifications and sowing amount: purple radish fleshy root individual small, appropriate increase in density is conducive to improve yield, using 2.4m packet ditch open moisture, 2.0m net moisture surface seed 10 rows, pond spacing 20㎝, each pond sowing 3-4 seeds, mu seed amount 250-300g.

Two, Field management

1, timely seedling replenishment: adhere to the principle of early seedling, sub-seedling, late seedling fixing, pulling out miscellaneous seedling, weak seedling, deformed seedling, diseased seedling, selecting and retaining pure seedling with varieties of leaf shape, color and lustre of bright green, leaf spreading, petiole and flesh are purplish-red seedling and seedling; there are lack of seedling should be replanted in a timely manner, and replanting with soil as far as possible to avoid bending of seedling, and when fixing the seedling, leave 1 seedling in each pond.

2, fertilizer and watering: the correct use of fertilizer, so that the above-ground part and the underground part of the balanced growth, is the key to high yield.

In management, fertilizer is generally 2-3 times, fertilizer should be organic fertilizer-based, increase the application of phosphorus and potassium fertilizer. The first fertilizer in the "belly" period, that is, 5-6 pieces of real leaves period, set the seedling mu with 5-6 kg of urea, water watering, for the late expansion of the fleshy roots to lay the material foundation; the second time in the "big break head The second time in the "big broken head" period, that is, when the diameter of fleshy root is 1-1.5㎝ thick, combined with watering, mu apply 2500-3000kg of human and animal feces, and 5-7.5kg of potassium dihydrogen phosphate, to promote the transfer of nutrients and accumulation.

Additionally, purple radish is more sensitive to trace elements, in order to prevent yield decline and quality deterioration, in the period of fleshy root expansion, mu applying 1.5-2.0kg of borax can prevent various symptoms caused by boron deficiency.

Three, pest control: adhere to the "prevention-oriented, integrated prevention and control, green plant protection, public **** plant protection" policy, in the prevention and control of a variety of effective non-chemical means of controlling the damage to reduce the number of pesticide use and the amount of drugs.

Weed prevention and control: two weeks before sowing, using glyphosate for the whole field to kill the old grass; after sowing before seeding, combined with inter-seedling artificial weed pulling; mid-term combined with mid-tillage weeding.

Pest control: focus on the prevention and control of tigress, chinch bug, yellow borer flea beetle larvae, cabbage greenfly, oblique moth, aphids, after the application of drugs, such as rainfall and other reasons affecting the effectiveness of the prevention and control, should be remedial treatment, the prevention and control of pests should be selected pollution-free pesticides, harvest 15 days before the use of any pesticide, is prohibited.

Disease control: purple radish growth period, the disease is light, the main diseases are virus disease, downy mildew, black rot, chemical control, in the early stage of the onset of the 0.2% agricultural streptomycin 1,000 times liquid or 72% bacteriophage 3,000 times liquid continuous control.

Four, appropriate leaf trimming: when the fleshy roots grow out of the soil surface 1/3, leaf trimming, generally leave 5-6 leaves per plant, the rest of the old leaves, diseased leaves, broken leaves trimmed off as green fodder.

V. Harvest: When harvesting, remove the leaves and fibrous roots, wash with water and sell.