The control effect of copper oxychloride on citruscanker was studied.
进行了氧氯化铜防治柑桔溃疡病的药效试验。
2
The typical symptom appeared as approximately circular spot with a yellow halo, without crateriform symptom as that of citruscanker.
病斑近圆形，周围有黄晕，但不象柑桔溃疡病那样有火山口开裂。
3
The systemic observation in the field for many years showed that temperature was the main factor affecting the dynamics of citruscanker in the stage of spring sprouting.