为探索氟硅酸防治苹果腐烂病的效果,自一九七五年春开始,我们在全县四处公社,苹果腐烂病严重的八个果园和贫下中农一起开展群众性的试验活动。两年的试验结果证明。氮硅酸对预防腐烂病的发生,病疤消毒、治疗病斑都有良好效果,现将试验情况初报如下:一、试验方法 1.防病试验:发 To explore the effect of fluorosilicic acid in controlling apple rot disease, since the spring of 1975, we conducted mass test activities in four orchards throughout the county, eight orchards with poor apple rot and poor peasants. Two years of test results prove. Nitrogen silicate to prevent the occurrence of rot disease, disease scar disinfection, the treatment of lesions have a good effect, the initial report is now as follows: First, the test method 1. Disease Prevention Test: hair