研究了接干和施肥对苗高为 3.0、3.5、4 .0、4 .5、5.0m初植的 3年生和 4年生泡桐幼树生长的影响。结果表明 ,1次接干能明显促进苗高为 3.0、3.5m苗的 3年生泡桐幼树的高生长 ;2次接干能明显促进苗高为 4 .5m的 4年生泡桐的高生长 ,并且苗高为 4 .0、4 .5、5.0m的 4年生泡桐幼树的高和胸径生长量都明显比 3.0m和 3.5m苗的大 ;施肥能明显促进苗高为 4 .5、5.0m的 1次接干泡桐幼树的高生长。 2次接干处理后 ,对高为 4 .0m的苗培育高干良材 (主干达 6.0m以上 )有一定的保障 The effects of watering and fertilization on the growth of young and aged Paulownia trees with 3.0, 3.5, 4.0, 4.0, 5.5 and 5.0 m in height were studied. The results showed that the primary growth of 3-year-old Paulownia saplings with the height of 3.0 and 3.5m can be obviously promoted by one-time drying. The secondary growth of 4-year-old Paulownia trees with the height of 4.5m can be significantly promoted by the secondary drying The height and DBH growth of 4-year-old Paulownia saplings with 4-year-old, 4-year-old, 5-year-old and 5-year-old mulching trees were obviously larger than those with 3.0 m and 3.5 m seedlings. 1 times the dry Paulownia sapling growth. 2 times after the dry treatment, the high 4.0m seedling cultivation of high-dried good material (trunk up to 6.0m) have some protection