桑树自幼苗定植到树势衰竭要经过15—25年的漫长岁月。要长期获得桑叶优质高产,必须抓好建园基础,肥培管理,合理收获等环节。否则桑树未老先衰,经济效益不高。一、打好建园基础 Mulberry seedlings planted from the seedling failure to go through a long period of 15-25 years. Long-term access to high-quality mulberry leaves, we must do a good job building foundation, fertilizer training, reasonable harvest and so on. Otherwise, mulberry is not old before the first decline, economic efficiency is not high. First, lay a good foundation for building gardens