First, the quality of the summer radish planted with excellent varieties should be selected from high quality varieties with good heat resistance, strong disease resistance, and fast root swelling. Such as: Xia Changbai No. 2, Xia Mei Lian Zaosheng No. 3 and other varieties.
Second, the site preparation Fertilizer planting radish should be used in deep soil, well-drained, sandy loam rich in organic matter. After the harvest of the former crop, the stubble weeds in the field are promptly removed, then 3,000 kg to 4,000 kg of fully-fertilized organic fertilizer and 50 kg of vegetable-specific compound fertilizer are used as basal fertilizer per acre, followed by deep plowing, soil preparation, plowing, and plowing. Fine, and finally for ridge, ridge distance 60 cm to 80 cm, ridge height 15 cm to 20 cm, ridge top width 20 cm.
Third, timely sowing according to market demand from late June to early August are suitable for planting, but not too early to broadcast, or rain, prone to disease. Large-sized radish varieties can be planted in a hole. The amount of seed per acre is 0.5 kg. Each row of ridges is planted in double rows when burrowing so as to maintain a spacing of 20 centimeters and 20 centimeters to 25 centimeters, with 2 seeds to 3 seeds per hole, and 2 centimeters after sowing. Thick sieving fine soil. Medium-sized radish varieties can be ditched and seeded. The depth of the ditch is required to be 2 cm to 3 cm, and the amount per mu is 0.75 kg to 1.0 kg. Smaller varieties use sowing, and the amount per mu is 1.5 kg to 2.0 kg. When sowing, it is necessary to use medicinal soil or chemical seed dressing in order to prevent underground pests. After sowing in the ditch to pour small water again, 2 days to 3 days before pouring a water, the amount of water does not exceed the ridge height, soaking ridge back is appropriate.
Fourth, strengthen field management
1. Seedlings, Dingmiao: When the seedlings emerged, the first thinning was performed when the cotyledons were unfolded; 3 to 4 true leaves were grown and the second thinning was performed; when the seedlings had 5 to 6 leaves, the fleshy root of the radish broke. Start seedlings, leaving only one strong seedling per hole.
2. Intertillage and weeding: The combination of thinning and cultivating the seedlings is performed in the first time and then the ploughing is performed. At the same time, the soil in the hoe ditch is cultivated on the sorghum surface to prevent the seedlings from falling.
3. Timely irrigation: In summer, the temperature is high and the water evaporates quickly. Therefore, water should be properly watered according to the soil moisture and the characteristics of the radish during each growth period. In the seedling stage, the seedling roots are shallow and the water requirement is small. It is necessary to grasp the principle of “less pouring and diluteâ€; in the period of leaf growth, it is necessary to grasp the principle of “appropriate watering†and not be able to water too much; during the period of root enlargement, it is necessary to grasp “ The principle of full and uniform water supply is to maintain the soil moisture at 70% to 80%. Note: Summer radish avoid watering at noon, it is best to water in the evening.
4. Fertilizer application: After tying seedlings, combine watering with 8 kg ~ 12 kg of urea per acre to promote the growth of leaves; In the early stage of fleshy root expansion, that is, after the bare shoulders, the amount of urea or ammonium sulfate 15 kg to 20 kg can be applied with water. , Potassium sulfate 10 kg ~ 15 kg. In addition, this period, if combined with the top dressing and then spraying fertilizer 2 to 3 times, will effectively promote the root swelling.
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