First, the election 1. Choose sandy loam with easy irrigation. 2. We must try to make it high, cover the film, and increase the temperature. Second, sowing preparation 1. Radish is a straight root crop, in order to reduce the occurrence of roots to promote root hypertrophy, to prevent the danger of soil drying must be deep plowing. 2. After 15 days of sowing, the cultivated land of chicken manure or organic manure was applied once. 3. Before sowing 2 to 3 days, according to the fertility of the soil, the soil after the application of NPKB fertilizer was used. 4. After applying soil insecticides, hoeing should be done in order to reduce the occurrence of roots and roots. 5.畦 width 140cm, two rows of cultivation, planting distance 60cm25cm. 6. The actual fertilization essentials: P. B fertilizer and chicken manure after the full amount of basal fertilizer; N. K fertilizer 2 to 3 times top dressing. The location of fertilization: between the first tree and tree, the middle of the second one, and between the third one and the other, avoid direct contact between the fertilizer and the root. 7. Sowing: 3 to 4 seeds per hole, covered with fine soil, pay attention to keep water. The soil temperature during the sowing season in spring is kept above 10°C, and the ground cover is used to increase the ground temperature, which is beneficial to germination and early growth. III. Fertility management 1. Germination and seedling period management 1 Moisture Management: To maintain proper moisture. 2 Pest prevention: Use insecticides to prevent various pests. 3 seedlings: When growing 2 to 3 true leaves, leave 2 trees per hole and leave 6 to 7 true leaves. 4 Temperature management: Continuation of 15 to 20 days at temperatures below 12°C will cause convulsions. 5 Others: When the true leaves of the seedlings are 6 to 7 leaves, apply the first fertilizer to prevent the soil from becoming hard. 2. Management of leaf and root elongation: During vigorous growth, rapid water changes can lead to cracking, etc. N fertilizer is easy to worry about. Fourth, the reasons for the decline in commodity rates 1. Cause: When the growing point of the original root was damaged. 1 There are stones, roots and other obstacles in the soil or the difference in the soil properties of each soil layer or the occurrence of immature composting. 2 The use of fertilizers such as chemical fertilizers or uncooked compost and chicken manure causes root growth to occur when the concentration of fertilizer is too high or the roots are topdressing.
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