摘要
对雷竹地下鞭进行调查研究的结果表明：①雷竹地下鞭鞭段数为５．６条／ｍ￣２，鞭长为９．６ｍ／ｍ￣２，体积为４．７×１０￣（－４）ｍ￣３／ｍ￣２。在土中分布可深达６０ｃｍ，１１～４０ｃｍ之间占８０．０％以上，其中２～４龄鞭占总鞭数的８５．０％。②壮芽占总芽数的３１．１％，集中着生在３～４龄鞭上，发笋能力以３～４龄最强，占当年发笋总数的７０．０％～８０．０％；③壮芽和发笋位置在鞭段中部最多，６～１５节壮芽占５８．７％，发笋占７０．１％，岔鞭多发生在鞭段前梢，在１～６节占６７．０％；④鞭的延伸方向以平行林地和向上生长的类型为多，约占８０．０％以上，向上坡伸展的在５０．０％左右，向下坡伸展甚少；⑤以土壤肥沃深厚、疏松通气、蓄水保肥性能良好的竹林地鞭量较多，分布结构合理；⑥立竹１０００～１１００株／１０００ｍ￣２的竹林，地下鞭结构最适宜；随着发育年龄的增大（１２年生以上），壮龄鞭和壮芽渐减，老鞭增多。
Lei bamboo had 5.6 rhizomes per square metre,and their length was 9.6m per square metre and volume 4.7 ×10￣(-4)m￣3 per square metre .Over 80.0 percent of the rhizomes were distributed at depth of 11 to 40 cm andthe number of the rhizomes at 2～4-year-old accounted for 85.0 percent of the total rhizomes.The great part of sound buds making up 31.1 percent of the total buds appeared on the rhizomes at the age of 3～4years 0n which 70.0～80.0 percent of bamboo sprouts could be developed in the same year.At the middle of rhizomes( joint 6～15, there were 58.7 percent of sound buds and 70.1 percent of bamboo sprouts, and the rhizomes generally branched near the tip(joint 1～6).The rhizomes growing upwards and parallel to bamboo forest land accounted for 80.0 percent of total rhizomes.The deve-lopment of rhizomes was good in fertile, loose and ventilating soil with good function of water absorption and fertility preservation,and the rhizo-matic composition could be rationally made in bamboo forests with the density of 10000～11000 stocks per hectare.
出处
《浙江林学院学报》
CSCD
1994年第3期264-268,共5页
Journal of Zhejiang Forestry College
基金
浙江省自然科学基金
关键词
雷竹
竹鞭
结构
Lei bamboo(Phgllostachys praecox f.preveynalis)
bamboo sprouts
buds
bamboo rhizome
