不同容器对沼生栎幼苗生长的影响
毕业论文关键词： 沼生栎、普通花盆、侧面开口花盆、无纺布植树袋、根系
Effect of different containers on Quercus palustris seedling growth
Abstract: In Quercus palustris seedlings were used to study the effects of different containers on seedling growth, analysis and comparison of pots and planting non-woven bags breeding process advantages and disadvantages in common pots, side opening. The results showed that the growth of root development in non-woven bag trees planted Quercus palustris seedlings and roots compared to ordinary pots and pots opening side has a better root development and more quantity. Compared to the ordinary side opening flowerpot flowerpot, since has better air permeability and water permeability, relative to better root development.Our nursery is in the development of a rise, in separate containers suitable for China's National Day to find nursery containers is particularly important. In the experiment for seedling Quercus palustris, the non-woven bags planting root showed good control of seedling growth help.
Key Words： Quercus palustris、Ordinary flower pots、Flower pots side opening、 tree planting non-woven bags、Root
目 录
1 绪论 1
1.1 沼生栎植物概述 1
1.1.1沼生栎的形态特征及生态习性 1
1.1.2我国沼生栎的研究历史 2
1.1.3沼生栎的应用前景 2
1.2 容器育苗的研究意义 3
1.2.1栎树容器育苗的意义 3
1.2.2 我国容器育苗的应用 3
1.2.3容器育苗的发展现状及趋势 4
1.2.4 容器类型的演变 5
2材料与方法 6
2.1沼生栎幼苗的种植 6
2.2叶绿素含量的测定过程[15] 6
2.2氮磷钾含量的测定 7
3结果与分析 8
3.1不同容器下沼生栎幼苗的生长情况 8
3.2不同容器下沼生栎幼苗的根系生物量比较 10
3.3叶绿素浓度的测定 10
3.4不同容器对沼生栎幼苗的氮磷钾含量影响 11
3.5不同容器下沼生栎幼苗的根系缠绕性 12
4讨论 12
5结论 13
致 谢 15
参考文献 16
1 绪论
1.1 沼生栎植物概述
1.1.1沼生栎的形态特征及生态习性
沼生栋为壳斗科栋属落叶大乔木,高可达25一36米。树冠塔形、整齐;枝条较细,垂落至地面:树皮灰褐色,光滑,小枝暗灰色,无毛;叶长椭圆形至椭圆形,长8~12厘米,具5一7波状深裂,长圆形裂片,先端尖,基部楔形,表面绿色有光泽,背面淡绿色,无毛或仅脉腋有簇毛,叶柄长2一5厘米;雌雄异花,雄花序数条簇生下垂,雌花单生或2一3朵生于一总柄上;坚果近半球形,长1.5一2厘米,径1.5厘米,壳斗浅杯形,苞片紧贴,无毛;花期4一5月,果实于次年9月前后成熟。
沼生栋一般生长于平原或平原周围地区,在丘陵山坡及海拔270米以上的地方相对较少。它耐水湿,能适应土表夏季过干而冬季过于潮湿的低洼及高平原地带,能耐短期积水,在湿润的生境及排水不良的粘重土壤中生长良好。其生长较快,30年生树干径达25厘米,株高达20余米[11]。对土壤要求不严,在潮湿、深厚、底层结构不粘重、排水良好及底层有粘盘或排水不良的立地上均可生长良好。它干形直，无明显病害。