Timely seedlings and tillage weeding. When the radish has 2-3 true leaves, the first time the seedlings are started; when there are 5-6 true leaves, the seedlings are made. Seeds sown in April and May are generally planted at one seed per hole; in the June-August planting period, one seedling is planted every 20 cm, the seedlings are often combined with cultivator, and the first and second seedlings are ploughed, loosened and loosened. The last time Deeper, and cultivated the soil in the trenches to prevent falling seedlings.
In summer, the radish is cultivated in the off-season. Because the cultivar itself has a short growing period and the temperature is high, it should be applied as early as possible except for the base pedicure. The seed fertilizer is usually applied on the same day or the second day after sowing; after the first time of thinning, 10 kg of urea is applied per 1/15 hectare (1 mu) to promote the growth of the leaves; in the period of “break†(about 5) - When applying 6 true leaves, apply topdressing once, and use 20 kg of compound fertilizer per 1/15 hectare (1 mu), combined with weeding and weeding.
The soil is properly dried in the early growth period of the radish, which is conducive to the growth of roots in the underground and prevents the growth of stems and leaves. After the fleshy root begins to enlarge, it is necessary to fully supply water and keep the soil moist. Do not dry it to prevent it from cracking, hollow and rough texture.
In summer, when radish is cultivated in off-season, the diseases that should be noted include soft rot and black rot. In particular, the diseases sown in April-May are even more serious and should be taken seriously. The soft rot disease can be 65% dexamethasone 600 times, 50% carbendazim 600-700 times, or 70% dexamethasone 800-1000 times, or 210-4 agro streptomycin. Spray every 7 days and spray 2-3 times. Pay special attention to medication after the rain. The control method for black rot is to first perform soil treatment in the ward, use “5406†fungus fertilizer as base fertilizer, or apply 50% thiram to every 1/15 hectare (1 mus) furrow or acupoint, or 65% daisen Zinc 0.5-.07 kilograms of fine soil 10-12.5 kilograms and mix thoroughly. In the early stage of the disease, antibiotic agent “401†can be sprayed 600 times, or 0.2%-0.3% lime-fold Bordeaux fluid can be applied 1-2 times.
The common pests are Plutella xylostella, Plutella xylostella, Brassica napus, Pieris rapae, and aphids. Larvae mainly attack the seedling stage and start harming from the start of the cotyledons. If cotyledons are damaged, they have a great influence on the growth of radish. The larvae of the larvae will burrow into the soil during the root enlargement of the radish and cause radish to look ugly. , quality decline. Therefore, production should pay attention to the prevention and control of the yellow-shelled worms, which can be sprayed with methyl parathion. During the planting period from June to August, special attention should be paid to the prevention and treatment of cabbage caterpillar fungus and rapeseed meal. The prevention and control methods can refer to cabbages and cabbages of cruciferous families.
The radish sown in April-April should be harvested in time, otherwise the phenomenon of bolting is likely to occur and affect the quality. When sown in June-August, it should be timely harvested when the roots of the flesh are fully expanded.
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