毛竹林边际扩展促控措施对新鞭生长的影响

Effect of New Rhizome Growth on the Fringe of the Forest of Phyllostachys heterocycla cv.pubescens by Different Measure

通过对毛竹林外侧的扩鞭试验研究表明 ,竹鞭的平均直径随抚育措施力度的加大而有加大的趋势 ,竹鞭长度以深翻垦复和锄草松土的单鞭较短 ,但鞭段数增加 ,新鞭总长以竹蔸施肥的最长 ( 7.75m,比锄草松土、深翻垦复两措施均长 1 .4 m) ,组合措施的新鞭总长均比单一措施的长 ,竹蔸施肥有利于竹鞭范围的扩展。随着坡位的降低 (即立地的变好 ) ,有鞭段增长、鞭段数减少、竹鞭增粗。

The test on rhizome expanding outside Phyllostachys heterocycla cv.pubescens stand showed that the average diameter of rhizome increased with enhancing of tending measure.By deep plowing,weeding and loosening the soil,the length of rhizome was shorter but the number of rhizome joint increased.The total length of new rhizome by applying fertilizer to the base of bamboo was longest (7 75 m,1 4 m longer than that by deep plowing,weeding and loosening the soil).The total length of new rhizome by combinative measure was longer than that by single measure.Applying fertilizer to the base of bamboo was beneficial to the expanding for rhizome.The length of rhizome joint,the diameter of rhizome and the range for rhizome expanding tended to increase while the number of rhizome joint tended to decrease with reducing of the slope (rising of site).The conclusions provided reference to rhizome expanding and growing to full stand.