First, the control of large spot can be used 70% thiophanate-methyl or 50% carbendazim or 70% mancozeb WP, 50-100 grams per acre, watered 30 kg spray, every 7-10 days anti-time , Total 2-3 times.
Prevention of downy mildew can be used 25% metalaxyl, 90% epimedium cream, 50% metalaxyl manganese zinc, 90% metal frost copper wettable powder 600 times or 64% antitoxic powder wettable powder 400 times liquid soaking 24 Hours, cool dry sowing, control effectiveness in more than 70%.
2. The insect pests of waxy corn are mainly the underground pests at the seedling stage and the corn borer at the ear stage. You can take the following measures: 1. When planting seeds with phoxim or 2000-3000 times dimethoate solution, it can control underground pests such as earthworms, earthworms and earthworms. 2. For waxy maize production fields aiming at picking fresh corn, it is better to use biological control methods to control corn borer, that is, to inoculate Trichogramma eggs to control the occurrence of corn borer. If it is necessary to use chemical pesticides to control corn borer, low-level pesticides should be used to prevent and treat it in the small bell-mouth period. The dosage should be as small as possible, so that it can be used with caution, less use, and early use of pesticides. It is scientific and effective to control underground pests. Do not leave pesticide residues on milk spikes to produce pollution-free waxy corn products. 3. For waxy corn with harvested grains, the control of corn borer can be done during the big bell-mouth period, with 1 kg of 1% carbofuran granule per acre.
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