(1) Choosing sputum, soil preparation, and application of base fertilizer
It is advisable to use fields with more fertilization and less fertilizer before the crop. It is best not to work with cruciferous vegetables. Deep ploughing and turning over, applying enough base fertilizer, applying 37,000 to 45,000 kilograms of decomposed organic fertilizer per hectare, 1 200 kg of plant ash, 375-450 kg of superphosphate, and 750 kg of diammonium phosphate.
(2) Sowing at the right time
The suitable sowing season for autumn and winter radish is from late July to early August. Other seasons of radish sowing period should be planted according to its variety characteristics and market needs. For example, spring radish can be sown from late February to early April. The seeding amount should be determined according to its cultivation density, about 3-6 kg/ Hectare.
(3) Field management
(1) Time seedlings Generally, when the first true leaf is unfolded, the first seedling is carried out, and when the first seedling is broken, a strong seedling having the characteristics of the variety is selected.
(2) Watering is adequately watered during the germination period, and the soil water content is above 90%. In the seedling stage, the seedlings are shallow, the water requirement is small, and the soil water content is 60%. Master the principle of less pouring and pouring. The leaf area needs more water during the growing season and is moderately irrigated. The root growth period should be adequately and evenly supplied to maintain soil moisture between 70% and 80%. The roots should be properly watered in the later stages of growth to prevent hollowness.
(3) The principle of fertilization by staged topdressing radish is based on base fertilizer and supplemented by top dressing. Generally, after topdressing, the fertilizer is applied 2 to 3 times, and the concentration should not be too large.
(4) cultivating and weeding soil, especially in autumn, the temperature is warm, the rain is more, the weeds are easy to grow, and weeding and weeding in time.
(5) The main pests of pest control are aphids, diamondback moth, cabbage caterpillar, yellow stripe and so on. The main diseases are viral diseases, downy mildew, soft rot and so on.
(6) Harvesting is generally full expansion of the fleshy roots, the base has been rounded, the leaves have turned pale, and harvested when it turns yellow-green. After about 50 to 60 days of sowing, the spring radish should be harvested in time. The summer radish and the radish sowed in the early autumn grow fast, and harvested 40-60 days after sowing. In the autumn and winter radish, most of the fleshy roots exposed in the ground are harvested before the frost.
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