元帅系苹果枝干病害的防治￥河北廊坊市农校＠李锦元帅系苹果枝干病害的防治随我市元帅系短枝型品种栽植面积扩大，其枝干病害日趋严重，主要表现为：多种枝干病害同时在一棵树上发生，主要有腐烂病、干腐病、轮纹病；病株率高，严重的园片达１００％；病情严重，其中有一个６年... Marshal Department of apple disease prevention and control ¥ Langfang City, Hebei Agricultural School @ Li Jin Yuan Shuai Department of Apple tree disease prevention and control with the city Marshal Department Spur type planting area expanded, the growing branch disease is more serious, mainly as follows: Branch of disease occurs in a tree at the same time, the main rot, dry rot, rotundity; diseased plant rate is high, severe Park up to 100%; serious condition, of which there is a 6 years ...