First, the main diseases
1. Radish black heart disease: Black rot is a disease caused by black rot fungi. The main symptoms are darkening of the center of the root and black rot of the vascular bundles of the fleshy roots. It can be soaked in warm soup at 50°C for 30 minutes, or soaked in 100 ml of Fumei for 100 hours. Control can be used neemectin 4000 times or 50% DT500 times or 3000 to 4000 times the agricultural streptomycin and 50% carbendazim 500 times spray, spray once every 10 days, and even spray 2 or 3 times.
2. Viral disease: early use can be used 1.5% of the plant disease Ling 500 times or 20% of the virus A WP 500 times or 2% of nannanmycin 200 times with 2 to 3 times. It was found that the aphid could be sprayed with 40% Dimethoate 1000 times spray. Prevent hot and drought.
3. Soft rot: Soil lime, 40 kg of lime per acre, pay attention to drain water, do not apply nitrogen, apply more phosphorus, potassium and organic fertilizer; pay attention to pest control, reduce insect wounds, transplant seedlings do not hurt the roots, Timely harvesting; before the onset or early onset, use 30% copper oxychloride suspension 600 to 800 times or 77% to kill the WP 600 to 800 times or 72% to the agricultural streptomycin sulfate soluble powder 4000 Double liquid, one of the above liquids can be used for root irritation treatment, 0.3-0.5 kg per plant, every 10 days, continuous irrigation 2 or 3 times.
4. Downy mildew: After the rain or early onset, it can be used 600 times for 53% Jinlei Duomier, 72% for metalaxyl manganese zinc 500~600 times, 66.8% for moldy grams 600 times, 70% Antaisheng (zinc rich) 500 ~700 times, 600 times bigger, and 600 times more spray.
Second, the main insect pests
Radish pests include yellow striped hops, small ground tigers, cabbage worms (white cabbage larvae), and borers (vegetative larvae).
1. Yellow-striped beaks: larvae can be irrigated with 90% trichlorfon 500 times to irrigate or apply double 800 times the insecticide or ground sulcis granules, etc.; adults fight drugs to control, in the adult occurrence of Sheng During the period, the use of 2.5% Kung Fu EC 1500-2000 times or 2.5% chlorinated EC 4000 times or 48% LS 1000-1500 is used for spraying.
2. Small tigers: When sowing, use Le Sibu granules, fipronil and other mixed sand in the seeding ditch. When the seedlings are unearthed, 50% phoxim 800 times or 25% DD 2000 times or 20% fenthrin emulsion 8000 times or dipterex crystal 800 times etc. may be used to irrigate or treat the soil. The leaves were broken and sprayed with 90% crystals of 400-500 times of trichlorfon, and were scattered near the roots in the evening. The insecticidal effect was good.
3. Locusts: When there is a loach rate of 10% or an average of 3 to 5 loaches per plant, control should be sprayed: 40% Dimethoate 800~1000 times available, or imidacloprid Net, big hero, net again) alternate spraying according to mu dosage.
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