I. Stem pest control: Tobacco stems contain nicotine, nicotine and other toxic substances, which can control a variety of granary pests. When storing the grain with wolfberry, put the shredded tobacco stalk 10cm thick at the bottom and upper part of the pot. When storing the grain with the urn, place the chopped tobacco stalk on the grain surface, seal it with a plastic film after capping. New foods can be kept for 8 months without insects. Second, orange peel, red pepper, ginger pest control: 3 kinds of substances dried and crushed, equal amount of unequal mixing, gauze packaging 50 grams per bag, 500 kilograms of food in 3 layers of a total of 10 bags, plastic film sealed storage. One of them can be replaced by aromatic plants such as yam pepper and its seeds, anise, and fennel. Third, bitter buckwheat leaf pests: bitter buckwheat leaves dry in the sun, storage grain per 15 cm thickness of grain layer put a bitter buckwheat leaves to cover Yan seeds as a standard, a total of 3 layers, the top layer of bitter buckwheat leaves put thicker, but also The bitter buckwheat leaves and fruit crushed by the foodstuff 0.4% layered in the grain heap, the last layer of appropriate sprinkle. Fourth, wormwood pest control: A variety of Ai, as long as there is odor, can be used to pest control. Sun dried wormwood is placed on 1 layer per 15cm grain layer, for a total of 3 layers. Each layer is covered with strict food. The Chinese herbal medicines with insecticidal and anthelmintic effects can replace the wormwood pests, such as Litsea cubeba, eucalyptus leaves, pyrethrum, and calamus. V. Biogas Extermination and Pest Control: Regularly introduce biogas into the grain or grain tanks, and then seal the grains or grain tanks. The poison gas in the biogas can prevent pests from intruding and kill pests that have invaded the grain storehouse. In order to infiltrate the biogas quickly into the grain piles, a bamboo raft with a porous cover around the bottom can be inserted into the grain heap, and then the biogas can be passed into the bottom of the bamboo tube for 10-20 minutes to kill the pests. When food is piled up in bags, it is first sealed with plastic film and the biogas is closed. Use the insecticide completely and without pollution. Six, camphor leaves pest control: put a fresh citron leaves in the grain tank or pocket, you can pest control. Can also be dried and crushed incense leaves mixed into food and bran, accounting for 0.5% of food or feed, there are also pest control effect, leaves often better replacement. Seven, Rosin pest control: 500 kilograms of food into three layers of 0.5 kg of rosin, crushed after putting more than one point in the gauze bag, and finally sealed with plastic film storage. China Agricultural Network Editor