摘要
2003～2005年,在广西平果县龙何示范区对10种岩溶珍稀濒危树种的育苗和造林的技术及效果进行了初步研究。试验结果表明,在苗圃育苗的9个树种中,仪花和广西顶果木的发芽率不足50%,其他树种则在70%以上;蒜头果有轻微性的根结线虫危害,其他树种的病虫害很少,大多数树种苗木均表现出早期生长慢、后期生长快的势头。在直播造林中,苏木的效果最好,蒜头果次之,而蝴蝶果、广西顶果木和海南椴等很差;任豆、东京桐等5个树种的植苗造林成活率超过75%,其中任豆和广西顶果木的株高平均年生长量大于40cm,东京桐、蝴蝶果和海南椴等树种则小于25cm。
During 2003- 2005, the technique and the effect of cultivating seedlings and afforestation of 10 karst rare and endangered trees were studied in Longhe Eco-restoration Demonstration District. The preliminary effect showed that 9 tree species which were seeded in the nursery, the germination rate of Lysidice rhodostegia and Acrocarpus fraxinifolius were under 50%,and the rest had over 70%. Malania oleifera was disserved lightly by root-knot nematode, and the rest was seldom plant diseases and insect pests. Most of the seedlings had the same trend of slow growing at early stage and rapid growing at late stage. Among the direct seedings, Caesalpinia sappan grew best,Malania oleifera followed, but Cleidiocarpon cawaleriei ,Acrocarpus fraxinifolius and Hainania trichosperma showed poor growth. The survival rates of five tree species such as Zenia insignis and Deutzianthus tonkinensis were over 75 %, and the average annual growth of Zenia insignis and Acrocarpus fraxinifolius were over 40 cm, Deutzianthus tonkiensis , Hainania trichos perma and Cleidiocarpon cavaleriei were less than 25 cm.
出处
《广西植物》
CAS
CSCD
北大核心
2009年第2期222-226,共5页
Guihaia
基金
国家科技攻关项目(2001BA606A-08
2006BAC01A10)
中国科学院"西部之光"人才培养计划项目(2004)
广西科技攻关项目(桂科攻0322021-3)
广西自然科学基金(桂科基0342001-6)~~
关键词
岩溶
珍稀濒危树种
育苗
造林
桂西南
karst
rare and endangered trees
cultivating seedlings
afforestation
Southwest Guangxi
