1. Fine seedling management. The seedling stage is dominated by the growth of seedling leaves. In the first true leaf, the first time the seedlings were planted to prevent crowding with the seedlings. 2-3 true leaves for the second time when the seedlings, each hole can be left seedlings 2-3 strains. When 5-6 leaves, according to the characteristics of the varieties according to a certain spacing between the seedlings. In addition, if the temperature is high and the soil is dry, apply small water to the ground and combine with cultivator loose soil to promote root growth. After setting the seedlings, the basket can be topped with 10-15 kg of ammonium sulfate, watered after top dressing, and used to control vegetable lice and aphids when in use. Northeastern radish flies are seriously damaged in the autumn, and they can be sprayed with 800-1000 times of trichlorfon during the adult period to eliminate adult radish flies.
2. The management of the early root growth of fleshy roots. The management objectives of this period are: on the one hand to promote the vigorous growth of the leaves, the formation of a strong rosette leaves, to maintain a strong ability to assimilate, on the other hand to prevent the leaves lengthy, so as not to affect the expansion of fleshy roots. After applying fertilizer for the first time, it can be watered for 3 times. When the fifth leaf ring is exhibited, most of the leaves should be properly controlled for watering. When the value of the strain is promoted, it is transferred to the time when the meat roots grow vigorously. Also use time spray to control aphids and downy mildew. After bare shoulder, the second topdressing can be performed with 25-30kg compound fertilizer per acre.
3. The management of the root growth of fleshy roots. This period is the main period for the formation of radish product organs. It requires more fertilizer and water. After the second topdressing, watering is needed in time, and watering is performed once every 3-5 days to keep the soil moist. If the soil is deficient in water, the growth of the roots of the flesh is hindered. This is rough and spicy and reduces the yield and quality. Watering is usually stopped 5-7 days before harvest.
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