First, the main cultivars: No. 13 short-leaf, late radish Nanping Chau, Zhejiang University.
Second, the soil fertigation: radish requires loose sandy soil, planting radish should choose a deep layer of soil is neutral or slightly acidic sandy loam, before the fertilization and consumption of fertilizer less vegetables, should try to avoid continuous cropping with cruciferous vegetables To avoid pests and diseases.
The land of radishes should be ploughed and turned over more quickly. The depth of cultivated land varies depending on the variety. Long-rooted varieties such as Zheda long radish require deep plowing over 33cm, Nanbianzhou radish can be plowed 15-17cm, and medium-sized radish can be plowed 20-25cm. Radish root system is developed, a large amount of fertilizer, the experience is "basal fertilizer based, supplemented by top dressing, cover seedlings long seedlings, fertilizers long leaves, basal long head." The amount of fertilizer depends on the soil fertility and variety. During the site preparation, the fertilizer which accounts for 70% of the total fertilizing amount is used as the basic fertilizer, and the perennial urine and manure urine 2000-3000kg, the superphosphate 30kg, and the plant ash 50-80kg per 667m2 are applied, and then the soil is deeply ploughed and then applied to the human waste 2000 before sowing. ~ 3000kg, after the shallow ploughing, flattening, you can sow.
Third, timely sowing: autumn and winter radish from mid-August to early September for the appropriate period. Large and medium-sized varieties can be planted or drilled in rows, with large planting distances of 50cm22cm and medium-sized varieties of 20cm15cm. Small-sized varieties are usually sowed with 0.5-1kg per 667m2 seeding, and 1-1.5kg for drilling or spreading. Generally after planting 3 to 4 days after sowing, sowing after the use of six-tooth alfalfa flat iron shovel and other tools to suppress the practical, so that the seeds and soil in close contact, and then applied to cover the seed water, suitable for top soil.
Fourth, field management:
1. Seedlings and earth-cultivation: After the radish is unearthed, 2-3 shoots, 4-5 shoots, and 6-7 shoots shall be used to remove the seedlings. Finally, 1 seedling shall be left at the predetermined spacing to remove miscellaneous, inferior, disease, and weak seedlings. Preserved cotyledon hypertrophy, no defect, fresh leaves, erect hypocotyl thick seedlings. Intercropping should be combined with cultivator, the first time shallow ploughing, only to loosen the topsoil, the last time deeper, while the sulcus of the soil cultivated in the surface, in order to prevent down seedlings.
2. Topdressing and Irrigation: The radish topdressing is early and usually ends within 1 month. Generally, the seed fertilizer is applied on the same day or the second day after sowing. After each seedling, appropriate diluted manure water is applied. After the fleshy root begins to enlarge, it is necessary to ensure adequate water supply and keep the soil moist. Never dry and damp, avoid fleshy root cracking, hollow, rough texture.
3. Pest control: The main diseases of radish are black rot, which can be controlled by agricultural streptomycin or enemy cough; the main pests are cabbage caterpillar, diamondback moth, flea beetle, aphid, etc. , Ji Qi insects grams grams and other prevention and treatment.
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