【摘要】 杜仲高生长以 4～ 7月份生长最快 ,6月份达最高峰 ;径生长以 5～ 7月为旺盛期 ,其中 6、9月各有一次生长高峰 ;杜仲林地施肥以 4～ 5月为最佳 ;施肥量为一个区间 ,且因树龄而异 ;施肥按坡台地和平地进行沟施和穴施更多还原

【Abstract】 High growth of Eucommia ulmoides was very fast between April and July, and reached peak in June. Diameter of Eucommia ulmoides grew rapidly between May and July, and two peaks appeared in June and September respectively.Fertilization in Eucommia ulmoides stand was the best in April and May.Fertilization quanlity was different with tree age. According to slope and mesa fertilization shoud be done in sink and hole patterns.更多还原