对引种优良笋用竹出退笋及其产量的分析  

Preliminary study on shoot birth and death and its yield of fine shoot bamboo introduced

作　　者：陈章跃 宋建忠 王华虎 吴炳生[2] 谢双喜[2] 

机构地区：[1]贵州省桐梓县林业局,贵州桐梓563200 [2]贵州大学农学院林学系,贵州贵阳550025

出　　处：《山地农业生物学报》2001年第2期92-98,109,共8页Journal of Mountain Agriculture and Biology

基　　金：贵州省科技厅"九五"基金项目资助! [(1997) 30 34]

摘　　要：为探索笋用竹的最适生境 ,通过采用不同生境的梯度试验 ,不同海拔不同竹种笋期 (包括形态特征、出退笋、竹笋—幼竹生长、笋体重量 )连续定株观测与全面调查相结合的方法 ,对桐梓县引种的优良笋用竹各竹种的出退笋、竹笋—幼竹的生长规律进行了研究及初产估算 ,结果表明 ,3个引种点、4个主要竹种的笋期逐年趋向于与原产地相一致。反映出各竹种已逐渐适应而顺利生长 ;同一竹种不同海拔的笋期随海拔升高而推迟 ;退笋主要出现在发笋盛期与末期。由于平均每穴发笋的增长率以及每支鲜笋重量大小不同 ,因此不同竹种 ,不同海拔之间的产量有差异。经测算 ,各竹种郁闲后的平均产量可达 2 0 0kg·667m- 2 ,其中早竹可达 30 0kg·667m- 2 。By meas of gradient tests of different habitats and elevations,and combining methods of located observaztion and total investigation the growth rules of bamboo shoot birth and death and the shoot to young bamboo of fine shoot bamboo were studied,which was introduced from Zhejiang Provinee in Tongzi, Guizhou. Results of 4 years showed that the shoot times of 4 bamboo species at 3 introduced sites was gradually consistent with the original sites, reflecting that bamboos introduced were well adapted at introduced sites. The shoot time was postponed with elevation raised, and shoot death mainly occured during the peak and end of shootting. Due to difference of the increased rate of shoot producing each pit and the fresh bamboo weight,the yields of bamboo species were difference at different elevation. The mean yield of shoots at closed bamboo forest was 200 kg·667m -2 among which phyllostachys praecox could be 300 kg·667 m -2 , the yield was 2 or 3 times more than the native bamboo.

关 键 词：笋用竹 引种 笋期 海拔 产量 生境 出笋 退笋 幼竹 生长规律 

分 类 号：S644.2[农业科学—蔬菜学]