First, the main pest control methods for rice sheath blight: when the diseased hole rate is 15-20%, use 20% Jinggangmycin powder 50g or dried-broom net 50g watered 50-60kg spray. Rice blast disease: In the early stage of disease, 20% tricyclazole powder is used 1000 times or 20% TEOD is 1000 times. Erhuaiao: There are 500 eggs per mu in Putian. When the dry sheathing rate of Datian is 0.5% or more, use 50% insecticidal double 100 g or 90% insecticide 50 g to spray 40-50 kg of water. Rice planthoppers: The tillering period of rice tills the early stage of booting. There are 500 insects in one hundred holes, spray 25-30 grams of 25% Buprofezin or 20-40 grams of 10% imidacloprid for 30-40 kg. Second, the main corn pest control methods Corn borer: Corn 100 strains of eggs or 5 mosaic plot rate of more than 10% of the plots, per acre with 18% insecticide double 200 ml watered 40 kg uniform spray. Maize size spot disease: In the period from the end of the heart to the silking stage, spraying with 75% chlorothalonil 300 times, once a week, spray 2-3 times continuously.