The great occurrence of corn seedling diseases and pests is a new problem in corn cultivation in recent years, which poses a threat to corn production and seriously affects the yield.
1. The control object 1 Maize seedling pests are mainly used to control pests such as corn borer, stem borer and other barnyard borers that are harmful to the corn growth point, and also to prevent underground pests and aphids, ash, and other pests such as ticks, golden needles, ground tigers, and earthworms.è™± and other spread virus pests.
2 Diseases of corn seedlings should be based on the prevention and control of Fusarium moniliforme as the pathogen, to strengthen the disease prevention of seed propagation, prevention and control of seedling blight, zinc deficiency, and ketchi disease.
2. Prevention and control methods Maize seedling pest control should adhere to the principle of “prevention-based, comprehensive prevention and controlâ€, focusing on agricultural control, selection of disease-resistant varieties, and at the same time do seed treatment, reasonable fertilization, appropriate use of pesticide control, can effectively control and Reduce the occurrence and harm of the first phase of pests and diseases.
1 Implement crop rotation, deep fall in the autumn, clean the garden, apply decomposed organic fertilizer, reduce insects, bacteria source. Select strong resistance varieties, sowing before sowing 1-2 days, in order to improve the enzyme activity, increase agricultural fertilizer and phosphorus, potassium fertilizer.
2 with 5O% triadimefon seed dressing by 0.3%, to prevent smut and full-blown disease.
3 Use seed coating or use 50% phoxim EC per acre 200-250 g plus fine soil 25-30 kg mix well after the ridge strip application, or use 3% phoxim granules 4 kg mixed fine sand Application of underground pest control.
4 Properly dense planting to ensure sufficient nutrient area per plant, strengthen field management, and timely shovel.
5 For the field crops of corn borer and stalkworm, use 50% dichlorvos 400 times solution or 40% dimethoate 500 times solution to spray roots, or use 90% trichlorfon 300 times solution to control the spray roots. 40% Dimethoate or 40% Dimethoate EC 2000-3000 can be sprayed to prevent aphids from occurring.
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