A: Whitening the jujube trees in the dormant period can alleviate frostbite in the trees, and at the same time prevent leaf mites and pathogens. The preparation method of the whitening agent is: 10 parts of water, 3 parts of quicklime, 0.5 parts of stone sulphur solution stock solution, 0.5 parts of salt, and a little animal or vegetable oil. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone X Ray Shaped Lead Thyroid Collar,0.35Mmpb X-Ray Protective Collar,Adjustable Lead X-Ray Collar,Large Shaped X-Ray Lead Collar Longkou Kangxie Medical Instrument Co., Ltd , https://www.lkkangxiemedical.com