美国竹柳在临沧市的引种试验

从昭通市引进美国竹柳进行插条扦插育苗、营养袋苗上山造林试验。结果表明,扦插育苗未用药剂处理,成活率达100%。在保证水湿条件,只施一次肥的粗放管理条件下,7个月苗高达1.5~2.5 m,地径1~2 cm。在造林后只铲一次草的粗放管理条件下,裸根苗在洼子地造林的成活率较高,达90%,在干旱坡地造林的成活率低,仅为17%;组培营养袋苗在干旱坡地造林的成活率最低,仅为10%。造林1年后,组培营养袋苗在干旱坡地的年均树高和地径生长量为28.1 cm和0.32 cm;扦插裸根苗在洼子地的年均树高和地径生长量为74 cm和1.7 cm;扦插裸根苗在干旱坡地的年均树高和地径生长量为30 cm和0.4 cm。试验表明:水湿条件或灌溉条件是保证美国竹柳引种成功的关键。

Introduction Test of Salicaceae magnoliophyta in Lincang

Introduction test of Salicaceae magnoliophyta including seedling cutting propagation and nutrition bag seedling afforestation was carried out.The results showed that the survival rate of seedling cutting propagation treatment without pharmaceutical was 100％,the seedlings grew up to 1.5 ～ 2.5 m,diameter up to 1 ～ 2 cm after 7 months under extensive management conditions of keeping water-dampness and only fertilizer once.Afforestation survival rate of bare rooted seedling was higher than 90％ in the low-lying land under extensive management conditions of only shovel grass once after planting,the survival rate of afforestation in arid slopes was low,only of 17％ ; Afforestation survival rate of tissue culture seedlings with nutrition bag was the lowest in arid slopes,only of 10％.After one year planting,annual tree height and diameter growth of tissue culture seedlings with nutrition bag was up to 28.1 cm and 0.32 cm in the arid slopes ; annual tree height and diameter growth of bare rooted seedling cuttings propagation was up to 74 cm and 1.7 cm in the low-lying land; annual tree height and diameter growth of bare rooted seedling cuttings propagation was up to 30 cm and 0.4 cm in the arid slopes.Tests also showed that wet conditions or irrigation is a key to success ensuring introduction of Salicaceae magnoliophyta.