The soybean leaves were infected by Septoria glycines and presented morbid state after 7 or 15 days in June in the east of Heilongjiang provice.

 
  • 大豆褐纹病在黑龙江省东部地区于6月中旬始见病斑,始发病期与当时气象因素有关。
今日热词
目录 附录 查词历史