苹果斑点落叶病和果实轮纹病、炭疽病、锈斑、药斑等逐渐成为影响苹果果实外观品质的重要因素。斑点落叶病、轮纹病、炭疽病的初侵染都在幼果期,此期使用常规杀菌剂多菌灵、甲基托布津、波尔多液、代森锰锌等,容易使果面产生锈斑和药斑,有些已对病原菌产生抗药性而降低了防治效果。大生M—45喷施2小时后,就能在苹果叶面、果面形成一层能透气、透水、透光的致密膜。这种膜不仅能防止病原菌的 Apple spot leaf deciduous disease and fruit ring disease, anthracnose, rust, drug spots and other gradually become an important factor affecting the appearance and quality of apple fruit. Spot leaf deciduous disease, rotundity, anthrax initial infection are in the young fruit period, the use of conventional fungicides carbendazim, thiophanate methyl, Bordeaux mixture, mancozeb, etc., easy to produce rust on the fruit surface And drug spots, some have been resistant to pathogens and reduce the control effect. Students Health M-45 spray 2 hours later, you can in the apple foliage, fruit surface to form a layer of breathable, water-permeable, transparent light film. This film not only prevents the pathogenic bacteria