How can carrot cultivation achieve high yield? High-yield cultivation techniques for summer sowing carrots
Carrots have strong adaptability, short growth period, few pests and diseases, easy management, low production cost, suitable for processing, transportation, storage, and nutrient-rich, and are well received by farmers and consumers. Huinong.com Xiaobian now introduces the high-yield cultivation techniques of summer sowing carrots as follows.
1 Choose excellent varieties
Summer-sowed carrots should be selected from short-lived, heat-tolerant, drought-tolerant, high-yield, high-quality, disease-resistant varieties, such as five-inch in summer, five-inch in summer, five in red, five in black, and six in red. Wait.
2 timely sowing
2.1 Seed treatment: soak seeds in 40°C hot water for 30min, then add cold water to reduce the water temperature to 20~25°C and continue to soak for 24h. After the seeds are fully absorbed, remove them and place them at 20~25°C for germination. When more than 50% of the seeds are exposed Sowing in time after small buds.
2.2 Seeding can be carried out by means of seeding or spreading. The seedling emergence period is high temperature and dry season. It is not suitable for germination and seedling growth of carrot seeds. The seedling rate is lower than that of spring sowing. Therefore, the seeding rate should be increased appropriately, and the dosage per 667m is 250~300g. Covered with straw after sowing, conditionally covering the shade of the shade net, requiring the shade net to be about 1m from the ground. If there is no shade covering, the amount of seeding should be increased as appropriate. It can be used in flat or high ridge. The sowing is a traditional method, which is mostly used for scattered small-area planting. The disadvantage is that the rhizosphere soil of the plant becomes tight due to multiple watering, and the soil permeability and water holding capacity decrease, which is not conducive to the development of carrot fleshy roots. The ridge planting is convenient for irrigation and drainage, and the rhizosphere soil of the plant is loose, suitable for large-scale planting. The ridge width is 45~50cm, the height is 10~15cm, the ridge distance is 65~70cm, and the ridge is opened with shallow ditch to sow 2 rows. After sowing, the soil is flattened with a roller to promote emergence, and the land with irrigation conditions is poured 1~2 times. It can be emerged (sowed when the soil is wet without irrigation).
3 Field management
3.1 between the seedlings and the seedlings, the seedlings need to be seedlings twice during the growth period, the first seedlings with 1~2 true leaves, the shallow seedlings after the seedlings, promote the growth of seedlings; the second seedlings and the seedlings in the 3~4 true leaves, The small variety keeps the plant spacing 10cm, the large variety plant spacing is 13~15cm, and the cultivation is carried out. Weeds are removed after emergence.
3.2 Fertilizer and water management During the emergence of carrots, water should not be deficient. The soil should be kept moist. Dry or over-wet is not conducive to seed germination and unearthing. During the growth period, the fertilizer is applied 2~3 times. The first top dressing is carried out during the carrot breaking period. In combination with the watering of 667m, the manure urine 1000kg or urea 20kg is applied. After 20d, the second and third times are applied, each time 667m Topdressing urea 15~20kg, and appropriate application of a small amount of potassium fertilizer. Into the vigorous growth of the leaves, water should be properly controlled to prevent the length of the child. Before the fleshy roots expand, the soil is buried, and the roots are buried in the soil to prevent the light from turning green and reducing the quality. The succulent roots need most water during the expansion period, should be poured in small water, timely water supply, and pay attention to water control in the later period.
4 Pest control
Summer sowing carrots to prevent aphids, can be controlled with imidacloprid or acetamiprid. The main diseases are powdery mildew and bacterial soft rot. Powdery mildew mainly affects leaves and stems. In the early stage of the disease, it can be sprayed with 150-200 times of agricultural anti-120 water solution. Bacterial soft rot mainly harms the underground roots. It is found that the diseased plants should be removed in time, and the field is destroyed. The lime is disinfected near the diseased plant. When the disease is severe, 75% chlorothalonil WP 600 times solution is sprayed. The spray is sprayed once every 7~10d, and sprayed 2~3 times.
5 harvesting
Most of the plants have yellow-green leaves and yellow leaves on the outer leaves, indicating that the carrots have reached the physiological maturity stage and can be harvested manually or mechanically. When harvesting, cut off the green head, gently scrape off the soil, and choose the carrots without fork roots, cracked roots, and pest roots for sale.
Carrot is one of the favorite vegetables in daily life, and it is also a species cultivated by many growers. Therefore, the high-yield cultivation techniques of summer sowing carrots hope to help you!
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