论文部分内容阅读
葡萄春季啥时喷药好? 葡萄春季出土上架后,喷5°波美石硫合剂,这是多年来传统的喷药方法。这对预防病虫为害虽有一定效果,但用药量大,不够经济。为了既能达到预防病虫的要求,又能尽量节省农药,经过几年生产实践证明,在萌芽期(芽膨大后至展叶期约四月上旬)喷药,取得了良好的效果。因为这时潜藏越冬的病虫,,随着芽子的萌动逐渐开始活动,
Spray spring grapes good time? Grape spring unearthed shelves, spray 5 ° Boulder sulfur mixture, which is the traditional method of spraying over the years. Although there is a certain effect in preventing diseases and pests, the dosage is large and not economical enough. In order to achieve the requirements of preventing pests and diseases, but also to save pesticides as much as possible, after several years of production practice has proved that in the germination (bud bulging to leaf expiration of about early April) spray, and achieved good results. Because at this time lurking overwintering pests, germination of buds gradually began to move,