10多年来 ,红富士苹果在临沂地区普遍存在结果晚、质量差的状况 ,一直被认为是不适栽地区。过去 ,采用环剥、化控等各种技术措施 ,但效果不明显 ,副作用大。为此 ,我局引进了新型果树促控剂ＰＢＯ ,在试验的基础上 ,1 999年在我县 1 6个村 2 3个点进行示范 ,取得了可喜的成果。 More than 10 years, Red Fuji apple in Linyi area results generally late, the poor quality of the situation, has always been considered unsuitable planting area. In the past, the use of girdling, chemical control and other technical measures, but the effect is not obvious, side effects. To this end, our bureau has introduced a new type of PBO, a fruit tree promoter. On the basis of the experiment, demonstration was made in 23 counties in 16 counties in 1999 with satisfactory results.