1 seeding period: 1.1 Seed treatment: Control of planthoppers to prevent corn rough dwarf disease. Use 70% imidacloprid suspension agent to seed or coat seeds at 0.6% of the seed amount. Control seedling blight, use 2% tebuconazole wet seed dressing or 50% carbendazim wettable powder according to 0.2% of the seed amount. For smut prevention, 2% tebuconazole wet seed dressing or 20% triadimefon EC was used for seed dressing at 0.2% and 0.5% of the seed amount, respectively. 1.2 Chemical Weeding Techniques: Prior to the sowing of maize, 50% of acetochlor EC 100-120ml or 96% of highly effective metolachlor EC 80ml-100ml or 33.3% Penicillin EC 100ml-150ml Watering 40 kg or 40% acetic anhydride suspension 150-200ml watered 30-50 kg sprayed on the ground to ensure that wet, spray uniform. 2 Seedling period: 2.1 corn mash with 3% phoxim granules 250 grams per acre or BT emulsion 100-150 ml sand 5 kg applied to the heart of the leaves, the former treatment of corn thrips. Second-generation armyworm and corn thrips were treated with 50% phoxim 1000-fold or 80% dichlorvos EC for 2000 times, both for corn borer and rare snow moth. 2.2 control weeds post-emergence stems and leaves treatment, mu with 4% Nicosulfuron suspension 75ml watered stems and leaves spray. Or with 20% paraquat 120ml-150ml water 30-50 kg, when the corn seedlings up to 30 cm when directed spray control. 2.3 Maize Rough Dwarf Disease Firstly, control SBPH to prevent virus transmission. The better agents are imidacloprid, pymetrozine, isoprocarb, etc., such as 10% 2% imidacloprid wettable powder 15-20g water spray control, while paying attention to Tianbian, ditch weed control. The second is to combine wheat bran with prevention and cure of the planthopper. The use of wheat bran and smuts together cures the pharmacy and sprays through the whole wheat field. The third is to remove the diseased seedlings and turn them up or change them. 2.4 top rot with 50% carbendazim WP 500 times, 70% thiophanate-methyl WP 600 times or 75% chlorothalonil WP 800 times, sprayed 2-3 times. 3 ear period: 3.1 control Curvularia leaf spot with 75% chlorothalonil, 50% carbendazim, 70% mancozeb 500 times spray; 3.2 control size spot with 50% carbendazim, 75% chlorothalonil, 80% mancozeb 500-800 times spray; 3.3 control of corn rust, in the early stages of disease, with 20% triadimefon EC per acre 75-100ml water spray. 3.4 Prevention and control of corn ear and ear with 90% dipterex crystal 800 times drop irrigation ear; 3.5 control corn borer with 10% imidacloprid wettable powder 10-15g watered 45 kg spray control; 3.6 Prevention and control of three generations of armyworm, with 50% phoxim 1000 times, 80% of dichlorvos EC 1000 times spray control. Http:// Stomach Tube,stomach tube sizes,Feeding Tube,tube feeding Anesthesia Medical Co., Ltd. , https://www.sinoanesthesia.com