What are the high-yield cultivation techniques of carrots? When is the best time to plant and harvest?

Carrots are also called carrots. Now what we grow and eat are varieties of wild carrots, which are one of the ingredients often used in people's daily meals. If there is a market, there will naturally be planting. Let's talk about the high-yield cultivation techniques of carrots. When is the best time to plant and harvest?

What are the high-yield cultivation techniques of carrots?

(1) the high-yield cultivation techniques of carrots in spring are as follows:

1. Carrot is a semi-cold-tolerant vegetable, the suitable temperature for germination is 20-25 degrees Celsius, the suitable temperature for growth is 18-23 degrees Celsius during the day and 13-18 degrees Celsius at night. Too high and too low temperature are disadvantageous to the growth of carrots, and carrot roots are well developed. deep ploughing the soil plays an important role in promoting root growth and fleshy root fertilizer.

two。 The soil should be deep sandy loam, and ph5-8 is more suitable. Soil moisture is required to be 60-80% of the maximum soil water holding capacity. If there is too much water in the early growth stage and the aboveground part grows too vigorously, it will affect the inflated growth of fleshy roots. If there is not enough water in the later stage of growth, the taproot can not be fully expanded, resulting in a decrease in yield. Too sticky soil or the application of immature base fertilizer will hinder the normal growth of fleshy roots and produce abnormal roots.

3. When the seedlings had 7-8 leaves, the seedlings were hoed and squatted deeply while the soil was wet, which promoted the extension of the main root and the development of fibrous root, and inhibited the excessive growth of the leaves. After 10-20 days, when the fleshy root was obviously dilated, it began to be fully watered and the soil was often kept moist. Ammonium sulfate 2kg / mu, calcium superphosphate 3kg / mu, potash fertilizer 2kg / mu. When fixing the seedlings, the combination of watering ammonium phosphate 10 kg per mu, potassium chloride 3-4 kg, to promote the seedling to thrive and grow rapidly. At the beginning of fleshy root growth, quick-acting organic liquid fertilizer or ammonium phosphate, potassium chloride and so on were applied. In addition, spring carrots were harvested 90-100 days after sowing.

(2) the high-yield cultivation methods of carrots in autumn are as follows:

1. Variety selection selects varieties with disease resistance, high yield, high quality, beautiful appearance, longer growth period and larger plant type. According to the market feedback in recent years, Bairi Red Crown, FS Xiuhong authentic products and other varieties are better.

two。 Carrots are usually sown in July. 3000 kg of fully mature farm manure was applied per mu before sowing. If chemical fertilizer is applied, it should be spread evenly, 25-30 kg of potassium sulfate compound fertilizer, 20 kg of urea and 30-50 kg of superphosphate can be applied per mu. Flat beds are mostly used in sandy soil, and high beds are suitable in rainy areas. Strip sowing is often used for sowing. The method is to open a ditch with a row spacing of 15-20 cm in the border, with a depth of about 2 cm. Sow seeds in the ditch evenly. After sowing, gently sweep the seeds sown outside into the ditch with a broom, rake them flat, and then step on them with your feet and water them again. Generally use 300-500 grams per mu. Where there are conditions, you can also use sowing, ditching and sowing at one time, with a row spacing of 20 centimeters and 250-300 grams per mu. Within 3 days after sowing, Jinchaoer spray was used to close the weeding.

3. Carrot field management sowing to seedling emergence requires to keep the soil moist, generally watering 3 times. When the seedlings have 1-2 leaves, choose the seedlings in the afternoon on a sunny day, 3 cm apart, and hoe shallowly between the rows. When the seedlings had 4-5 leaves, the seedlings were fixed in the afternoon on a sunny day, and the over-dense, weak and diseased plants were removed, and the seedlings were determined according to the characteristics of the varieties and plants. generally, the plant spacing was kept at 10-12 cm, and the seedlings remained 25000-30 000 plants per mu. After setting the seedlings, carry out the second intermediate ploughing and weeding, shallow ploughing, so as not to hurt the roots. The seedling stage coincides with a hot and rainy day, so it should be watered as appropriate to make the surface dry and wet. After watering or rainfall, ploughing and loosening the soil should be done in time.

4. When carrots have 7-8 leaves of seedlings, we should properly control watering, strengthen ploughing and loosen the soil, promote the extension of the main root and the development of fibrous roots, and prevent the overgrowth of plants. It was found that paclobutrazol 1000 times solution could be used for long-term control. When the fleshy roots of autumn carrots grow to the thick fingers, the water supply should be well controlled. too dry can easily lead to xylem embolization of fleshy roots and increase the number of lateral roots; too wet can easily cause succulent roots to rot; suddenly dry and wet water supply uneven, easy to cause fleshy roots to crack and reduce quality.

5. The growth period of autumn carrots is long, and the peak period of fertilizer is in the middle and later stage, so topdressing should be carried out by stages on the basis of applying sufficient base fertilizer. It is appropriate to apply quick-acting fertilizer, topdressing 3 times in the whole growing period, once every 15 days. Topdressing nitrogen, phosphorus and potassium compound fertilizer 15-20 kg per mu, combined with irrigation, flushing application can avoid root burning caused by high concentration of soil solution.

Second, when is the better time to plant and harvest carrots?

Different regions and different varieties of radish planting and harvest time are different, can not be generalized, the following is to introduce the planting and harvest time of several kinds of carrots, the majority of growers can collect.

1. Hybrid variety-Hongsen carrot: this variety of carrots are more hardy and can be planted in autumn and winter and harvested in February and March.

two。 Japanese hybrid carrots: this variety of carrots have good appearance, good cold resistance and strong adaptability. They can be planted in spring, summer and autumn, and can be harvested about 110 days after planting.

3. Improved new black field five-inch carrots: this variety of carrots are resistant to summer heat and disease, and are generally planted in summer and harvested in autumn and winter.

4. Hongying No. 2 carrot: it is introduced into jujube hybrid radish from Japan in China. It is generally sown in early spring and can be harvested about 95 days after planting.