提高毛竹低产林分生产力研究

2002年在福建省罗源县西兰乡甘厝村实施了毛竹低产林分经营措施试验,试验结果表明:不同经营措施对新竹胸径、高度、数量、杆鲜质量影响差异显著,深翻松土加施复合肥200 g.株-1经营效果最好,其次为深翻松土,再次为浅锄、年年劈山清杂、隔年劈山清杂,深翻施肥的投入产出比最大;土壤疏松程度不仅影响新鞭的增长速率,而且对新竹的数量、成竹率、胸径和杆的鲜质量也有显著的影响。在相似的生态条件下,地下茎(竹鞭)的粗细,不仅对其节间的伸长和芽的饱满程度产生显著的影响,其壮芽的百分率与地下茎的粗细密切相关,而且影响新鞭的增长速率以及新竹的数量和杆的鲜质量。

Study on Increasing Production of Low-Yielding Stand of Phyllostachys heterocycla var. pubescens

The managing experiments of low-yielding stand of Phyllostachys heterocycla were conducted in Gancuo village of Xilan Township of Luoyuan County in Fujian Province in the year of 2002.The results showed that the DBH of new bamboo,bamboo height,amount,fresh mass of culm appeared significant differences by using different managing measures.Deep-ploughing adding compound fertilizer with 200 g·per bamboo~(–1) had the best managing effect,and then deep ploughing,again the shallow uproot,cleaving mountains and eliminating weed year-by-year,alternate cleaving mountains and eliminating weed.The input-output ratio of deep-ploughing was the most biggest.The loosen degree of soil not only affected increasing volocity of new rhizome,but also affected significantly the amount of new bamaoo,stocking percentage,DBH,fresh quality of culm.Under similar ecological condition,the thickness of subterraneous stem(bamboo rhizome) not only affected the elongate of the internode and satiation of bud,but also affected the increasing volocity of new rhizome,amount of new bamboo and fresh quality of culm.Percent of strong bud of bamboo had close correlation with thickness of subterraneous stem.