Common causes of wheat yellowing and countermeasures
1, pests. Wheat aphids and wheat spiders draw liquid from the leaves, resulting in yellowing of the leaves, mainly before and after the wintering period. Anti-mites use imidacloprid, anti-influenza. Anti-wheat spiders use a broom net. Both of them can be used for the use of quail nets, good winters, lambda-cyhalothrin, phoxim and other pesticides. 2, disease. Wheat sheath blight hazard roots and sheaths, stem base, hinder the nutrient and water transport, will cause yellow wheat leaves, can be controlled by Cyclopirazole EC, Jinggangmycin and other pesticides. Barley yellow disease, wheat dwarf mosaic disease and other dwarf diseases, induced by aphids, Laodelphax striatellus and other transmitted viruses, there is no effective treatment after the disease. Pest control is the main method. In order to prevent the proliferation of harm, spray some insecticides and virus inactivators, foliar fertilizer mixture, enhance the disease resistance of wheat seedlings. 3, herbicide damage. The use of excessive herbicides or improper use of selected drugs will cause yellowing of the wheat seedlings. The general use of spray surface fertilizer to ease, shorten the residual hazard period and promote the restoration of growth. 4, lack of prime disease induces rational yellow leaves. In the absence of certain elements, spraying multiple compound fertilizer, interval 7-10 days, and even spray two times. When there is a lack of certain elements, single-element fertilizers can be used. 5, de-fertilizer. Mainly occurs in the poor soil fertility, the base fertilizer is severely deficient in the land, the wheat seedlings are thin and yellow, and the tillering power is poor. In addition to increasing the availability of fertilizers in such wheat fields, it is best to apply some organic fertilizer to protect the plants before winter. 6, too close. Inconsistent sowing or excessive sowing, too large populations of field wheat seedlings can also lead to yellowing of the wheat seedlings. Should be based on the size of field wheat seedlings, appropriate sparse seedlings, and increase fertilization. 7, water stains. It mainly occurs in the soil where the soil is heavy and the terrain is low. The "three channels" should be cleared in time to reduce groundwater level and field humidity, timely cultivating loose soil, appropriate topdressing available nitrogen fertilizer, spraying multi-element composite foliar fertilizer, and promoting growth and development. Our AIRWAY Products is good in quality and competitive in price. We are manufacturer and supplier AIRWAY Products following your specific requirement. We are looking forward to your E-mail and establishing cooperative relationship with you! We would provide professional Laboratory Tester with good services for you! AIRWAY Guedel Airway,Medical Guedel Airway,Disposable Oropharyngeal Airway,Ce Guedel Airway Ningbo Cland Medical Instruments Co., Ltd. , https://www.cland-med.com