论文部分内容阅读
白粉菌所引起的桑树白粉病(叶背白粉病)Phyllactinia Corylea(Pers)Karst(Ovulapiopsis Ulmoricapel)主要是在干旱的氣候,促进叶片硬化吋病害盛发,或因其他原因蓋使桑叶硬化而发病。目前广东蚕区这种病害非常普遍,在天气干旱的时节,因发生这种疾病而受到的損失是相当驚人的.但目前对这种病害尚未有一种較好的防治方法。为求得这一問題的解决,尋找出一种較为理想的防治方法,防止病害的发生。我們在桑树发病初期与中期,作了硫酸鉀溶液对防治桑树白粉病作用的試驗。
Powdery mildew caused by powdery mildew (Phlox powdery mildew) Phyllactinia Corylea (Pers) Karst (Ovulapiopsis Ulmoricapel) Mainly in the arid climate, promote leaf sclerosis inch disease flourish, or cover the mulberry leaf for other reasons and cause hardening of the disease . At present, the diseases in Guangdong Silkworm Area are very common, and the losses caused by the occurrence of this disease are quite alarming in the arid weather, but there is not a better prevention and control method for this disease now. In order to find a solution to this problem, we should find a better prevention and cure method to prevent the occurrence of diseases. We mulberry early and mid-onset, made potassium sulfate solution to control mulberry powdery mildew experiment.