The middle and late summer maize is the epidemic period of many diseases. The main insect pests are corn borer, armyworm, aphids, red spider, etc. The main diseases are leaf spot disease, stem rot (blight) disease, rust, etc., which should be forecasted and forecasted. Strengthen prevention and control. First, corn borer control corn borer, can damage all parts of the corn plant on the ground, so that the victim part of the loss of function and reduce grain yield. When the general strain rate reaches 10%, 1% phoxim granules can be used to quantitatively spread into the heart of the corn, with about 1 g per plant. Second, corn aphid control Aphid often clustered in leaves, tender stems, buds, apical buds and other parts, sucking sap, so that the leaves shrink, curl, deformity, severe stems and leaves will cause wilt or even the death of the whole plant. The honeydew secreted by aphids can also cause coal pollution, virus disease, and ant harm. 50% can be used to reduce the fog of 8 to 10 grams per mu or 10% imidacloprid per acre 10 to 15 grams of 45 kg spray control. Third, the corn armyworm against the armyworm armyworm larvae gluttonous corn leaves, when severe occurs, eat the leaves in the short term, resulting in reduced or even no harvest. Three generations can occur in a year, with the second generation damaging summer corn. Can be used 2.5% deltamethrin 1500 ~ 2000 times or 50% phoxim 1000 times spray control. Fourth, red spider control corn grouting, especially when it comes to drought hot weather, is also the most dangerous period of spider mites, when the field pest rate of more than 10% when using dicofol or omethoate 1000 times spraying the back of the blade. Fifth, corn leaf spot disease prevention and treatment of corn leaf spot mainly damage the leaves and loquat leaves. The lesions are irregular, light-transmitting, gray in the center, brown on the edges, and black dots on the upper part, which are the sub-capsules of the pathogen. Can be used 50% carbendazim, 75% mancozeb, 70% thiophanate 500 times spray rust prevention in the early onset with 25% triadimefon WP or cream 1500 ~ 2000 times, or 40% polysulfide suspension 600 times liquid agent, or 50% ultra-fine sulfur suspension 300 times and other spray control. Six, control of corn bacterial wilt Bacterial wilt is also called corn stem rot. It is a kind of important soil faecal bacteria disease that damages the root and stem base of corn. Should be the main prevention, in the middle and late stages of corn growth when the sporadic disease strains, metalaxyl 500 times or 500 times solution of carbendazim can be used to root, 500 ml per strain of drug solution. Very high sample collection and release volumes.Greatly improved the accuracy of the inspection . Patented polymer synthetics handle 4.The hidden danger of nasopharyngeal swab rupture is completely solved.iCleano swab is ideal for collecting large amount of samples and rapid elution of thespecimens. It instantly release the specimen into the transport medium, which is welladopted in the field of molecular genetics, forensics, clinical laboratories sectors etc. Sterile swab of disposable virus sampling tubes,Nasopharyngeal swab sample detection collection,Nasopharyngeal swab,Cotton/flocking sampling swab Jiangsu iiLO Biotechnology Co., Ltd. , https://www.iilogene.com