为了摸索楠竹的地下部分和母竹情况及发笋、退笋、成竹的关系,减低退笋,制订竹林丰产措施,我所在1975年用机械提水冲洗楠竹鞭根的基础上,1976年5月份当新竹基本长成时,又进行了第二块标准地竹鞭的冲洗,观察其发笋、退笋、成竹情况及其与竹鞭、母竹的关系。冲洗标准地位于山脚西北坡,坡度34度,面积0.47亩,土壤为含中等石砾黄壤,土厚1—1.2尺左右,总立竹数71根,其中母竹46根,新竹25根,密度151根/亩。林地在1974年浅垦过,未清除杂树、柴蔸。楠竹分别着生分布在11条主要鞭系 In order to explore the underground parts of bamboo and bamboo mother bamboo shoots and the situation, the return of bamboo shoots, the relationship between bamboo, bamboo shoots to reduce the backlog, the development of high-yielding bamboo measures, I was in 1975 with mechanical extraction of bamboo whip roots, based on 1976 When Hsinchu basically grew up in May of the same year, a second standard bamboo whip was rinsed out to observe its relationship with bamboo whip, bamboo shoots, bamboo shoots, and bamboo whip. Rinse standard is located in the northwestern slope of the foot of the hill, the slope of 34 degrees, an area of ​​0.47 acres of soil with medium gravel yellow soil, soil thickness of about 1-1.2 feet, 71 total number of bamboo, of which 46 bamboo, bamboo Hsinchu, density 151 / mu. Woodland was cultivated in 1974, did not clear the shrubs, Chaiji. Bamboo were born with 11 major whip distribution