The latest course of high-yield cultivation techniques of carrots

Carrot is a biennial herb of Umbelliferae. Fleshy roots are rich in sucrose, glucose, starch, carotene, potassium, calcium, phosphorus and so on. It contains 1.67-12.1 mg carotene per 100 grams of fresh weight, which is 5-7 times higher than that of tomatoes. After eating, it is digested and decomposed into vitamin A, which can prevent night blindness and respiratory diseases. Can be fried, cooked, pickled, pickled and so on. Resistant to storage. It is distributed all over the world, and it is cultivated in both the south and north of China, and its output ranks second in root vegetables.

Biological characteristics of carrot

The root system of carrot is straight root, the main root system is distributed in 20-90 cm soil layer, 180-250 cm deep, the upper part of straight root includes a small part of Hypocotyl hypertrophy, forming fleshy roots, on which there are four rows of slender lateral roots. The leaf cluster is born on the shortened stem, three-pinnate compound leaves, petiole slender, color dark green, small area, dense pilose. After storage and overwintering, the fleshy root bolts and blossoms, first the main moss, then the lateral branches and compound umbels. The seed embryo is very small, often stunted or embryless, the soil yield is poor, and the germination rate is as low as 70%.

Carrot stage development belongs to the green vernalization type, sowing too early in spring, when the seedling age reaches a certain size, it will bolt in advance due to the acceptance of longer low temperature. The vegetative growth period is 90-140 days, the germination period is about 10-15 days, the seedling stage is about 25 days, the leaf growth period is about 30 days, followed by the fleshy root growth period of 30-70 days. The seeds can germinate at 4-6 degrees, and the optimum germination temperature is 20-25 degrees. The leaf growth has strong adaptability. The taproot expansion period requires 13-23 degrees and night temperature 13-18 degrees. The soil requires sandy soil, PH5-8, and soil moisture of 60-80% of the field capacity.

Variety characteristics

1. Han Hong six inch ginseng. Introduced to South Korea, strong disease resistance, wide adaptability, easy to cultivate, both in spring and autumn. The fleshy root is nearly cylindrical, with a good ending, good merchandise and high yield. Skin, meat, core three red, crisp and tender texture, sweet and juicy, excellent quality, suitable for fresh food and dehydration processing. The root length is 20-26 cm, the root diameter is 4-4.8 cm, the root weight is about 280-300 grams, and the yield is high.

2. Japanese Gang Red Seven inch Ginseng. Introduced from Japan, strong disease resistance, wide adaptability, easy to cultivate, both in spring and autumn. Through several years of demonstration and promotion, it has become the first choice for farmers in the Central Plains. The fleshy root is nearly cylindrical, with a good ending, good merchandise and high yield. Skin, meat, core three red, crisp and tender texture, sweet and juicy, excellent quality, suitable for fresh food and dehydration processing. The root length is 20-26 cm, the root diameter is 4-4.8 cm, the root weight is about 280-300 grams, and the yield is high.

3. Baimu Tian improved five inches. Introduced from South Korea, varieties in spring and autumn. Its main characteristics are: fast and neat seedling emergence, rapid root growth, strong self-resistance, can quickly avoid disasters in Rain Water's big year, its forked roots and split roots are few, and the commodity rate is very high. The root of this variety is not exposed, that is, the root is not green, the root is cylindrical, it is close to the top and bottom, the bottom ends are good, and the root shape is beautiful, so it is the best choice for listing. Skin, meat, core three red, integrated, smooth skin, crisp and tender texture, sweet and juicy, crystal clear, suitable for fresh food and dehydration processing. It can be planted early or sowed late, with strong disease resistance and no premature senescence, with a general yield of 4000-5000 kg per mu.

4. Hongxing improved five inches. Introduced to Korea, it can be cultivated in both spring and autumn. The fleshy root is cylindrical, 20-25 cm long, about 5 cm in diameter, a single root weighs about 300 grams, with a maximum of more than 750 grams; three red skin, smooth epidermis, crisp and tender texture, sweet and juicy taste, suitable for fresh food and dehydration processing. It has strong disease resistance, no premature senescence, good ending, high commodity rate and high yield. the yield per mu can reach 4000-5500 kg in autumn, with a maximum of more than 6000 kg.

5. Huiyuan Xin Kuroda five inches. It has strong heat resistance and fast growth rate, and it begins to harvest 100-110 days after sowing, which is suitable for cultivation in early summer and midsummer. The root shape is good, easy to enlarge, neat and consistent, and the merchandise is excellent. The skin is orange-red, smooth and shiny, the flesh is bright red, and the core is small. The root length is 18-22 cm, the rhizome is 4.2-4.8 cm, the root weight is 280 g, the yield is high and the cultivation is easy.

6. East Asia improved five inches of new Kuroda. The production of Shitian Company in Japan has not only excellent performance but also stable promotion performance in China for many years. Root cylindrical, three red, good processing quality, available in spring and autumn.

7. Super red crown. Produced by Musano Co., Ltd., Japan, long cylindrical, three red, good ending, good commodity, long root shape, good quality and good comprehensive characters. It is available in spring and autumn.

8. Red songs. Produced by Dongfang Zhengda Company. Dark green leaves, strong standing, can withstand short-term high temperature and drought. Strong disease resistance, neat root type, columnar, root length 20-24 cm, thick 4.5 cm, weight about 300 grams. Smooth skin, crisp texture, three red, good finish. It can be harvested about 100 days after sowing. It is used both in spring and autumn.

9. Red Song No. 2. Dongfang Zhengda Co., Ltd. launched an excellent variety of imported carrots after Red songs. The root is 20-24 cm long, weighs about 300 grams and has high yield. The end is good, the rate of finished products is more than 90%, and the growth rate is fast. Wide adaptability and strong disease resistance. It is used both in spring and autumn.