植保技术交流
服务大众

Services to farmers.

病虫诊断
测报防控

Exchange professional skills
in plant protection.
病株下部叶片发黄,从叶片边缘开始枯萎
嫩叶畸形、变厚,叶片皱缩、褪绿、畸形,生长缓慢。
叶片表面均匀分布许多近圆形病斑。