天全县毛竹实生林速生丰产配套技术研究

四川省天全县从2001年至2003年在17个乡镇发展毛竹实生苗造林14 466.67 hm2,至2006年郁闭成林,本文研究了毛竹成林到成材的前10 a生长主导因素。结果表明:毛竹造林用苗,宜用整窝实生苗。实生苗造林前5a主要是补植抚育保成活,最主要的措施是砍灌、除草、亮窝正苗。后5 a是成材的关键时期,主要措施是控制立竹度,保持4 500株·hm-2～10 500株·hm-2都可以,超过10 500株影响成材。施肥效应对成材影响不明显,毛竹苗从栽植到第8个年头,几乎都可以不施肥,以后施肥以P、K为主,每hm2在1500 kg以内即可;将四川毛竹造林海拨向上推进了200 m达到1 400 m。

Fast Growing and High Yield Plantation Technique of Moso Bamboo Seedling Crop in Tianquan County

From 2001 to 2003,14 466.67 hm2 of moso bamboo forests were planted in 17 townships of Tianquan County,Sichuan Province.Till 2006,moso bamboo forests were established.In this paper,research was conducted on the leading growing factors of moso bamboo from forest to timber production forest in the previous 10 years.The results indicated that the using complete seedlings was better for moso bamboo plantation;For a higher survival rate,it was needed to clear weeds,cut shrubs and use upright seedlings and other nursery measures;The later 5 years were the crucial period of timber production.The main measure was to control the density of bamboo stand,maintaining 4 500~10 500 bamboo plants·hm-2.Exceeding 10 500 bamboo plants·hm-2 would affect the bamboo forest production.The effect of fertilization was not obvious.From the time of planting to the 8th year,there was no need to fertilize.Then only potassic fertilizer and phosphate fertilizer were needed,and were no more than 1 500 kg per hectare.By the tests,the forestation altitude for moso bamboo could increase 200 m,reaching 1 400 m.