【作者】 洪赛华；

【导师】 方升佐；

【作者基本信息】 南京林业大学 ， 森林培育， 2011， 硕士

【摘要】 杞柳在沿黄淮地区广泛栽培,是柳编的主要材料。杞柳的萌芽代次和萌芽经营方法相差较大,所生产的柳条产量和质量参差不齐。因此系统研究萌芽代次对产量和柳条质量的影响,可为优化杞柳人工林的栽培模式提供依据。通过研究,初步发现萌芽代次对生长和柳条品质影响显著,主要研究结论如下：(1)不同萌芽代次之间叶绿素相对含量、最大光化学量子产量、光化学淬灭的变化趋势不明显,但有效光化学量子产量随着代次增加有下降的趋势,表观电子传递速率第2代比第1代增加,然后随代次增加而下降。(2)不同萌芽代次的萌条平均地径、条高、生物量、单位面积萌条数量存在显著差异。其中第一代的生长指标值最小,第2、3、4代有所增加,而到第6代又下降。(3)萌芽代次对叶面积指数影响较大。第4代叶面积指数最大,第6代下降。叶面积指数与透光孔隙度负相关。(4)柳条的产量第4代高,第6代下降,1-4代有增加的趋势。但大中小条的分级在第2-4代之间差异不大,但第1代的中小条所占百分比最高。(5)柳条的尖削度在各代次间差异不显著,但整齐度存在差异,第1代最整齐,第3代最不整齐。萌条产生二级分枝的特点差别比较大,第1代产生分枝的比例较高,而且分枝的位置最低,第6代产生二级分枝的位置最高,而且比例也最少。(6)相同粗细的柳条的韧性以第4代最好,第6代有所下降。韧性和基本密度负相关。更多还原

【Abstract】 Salix integra Thunb. is widely cultivated along the Huang-Huai river region, and the coppice shoots are the main material for wicker production. With different cultivation managements, such as coppice rotation, the wicker yield and quality differed markedly. In this study, the S. integra plantations with different coppice rotations were selected to investigate the growth performance and the wicker quality, thus to provide references for optimizing the cultivation management of S. integra plantation. The main conclusions included that:(1) no significant difference existed for relative chlorophyll content, Fv/Fm and qP among different coppice rotations. But the Fv’/Fm’decreased from rotation 1 to rotation 6. The apparent electron transport rate (ETR) increased from rotation 1 to rotation 2, then decreased from rotation 2 to rotation 6.(2) significant difference existed for average shoot diameter, shoot height, biomass, and shoot number among different coppice rotations. These properties were low in rotation 1, then increase from rotation 2 to rotation 4, and decreased in rotation 6.(3) significant effect of coppice rotation was detected on leaf area index (LAI). The max LAI appeared in rotation 4. Then in rotation 6, the LAI decreased a little. LAI showed negative correlation with canopy openness.(4) wicker production increased with rotation increased and reached the max in rotation 4, and then decreased in rotation 6. In rotation 1, the plantation produced much thin wicker (< 5mm), while the percentages of thin, medium (5-10mm) or thick (>10mm) wicker did not differ significantly in rotation 2 to rotation 6.(5) no difference existed for stock shape coefficient but significant difference existed for uniformity degree among different roations. The highest and lowest uniformity were showed in rotation 1 and rotation 3, respectively. The properties of branches also differed markedly among different rotations. The highest branching initiation ratio was showed in the plantation of rotation 1, while, on the contrary, the lowest was in rotation 6. Moreover, the sprouting position of branches was lowest in rotation 1 and highest in rotation 6.(6) the lower MOE indicates the higher toughness of wickers. In our study, the MOE of the wickers with same diameter was lowest in rotation 4 among different rotations. In addition, the MOE had positive correlation with wood basic density.更多还原