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美丽箬竹是优良观赏经济竹种,对环境生态因子变化具有很高的敏感性。设置竹苗密度、光照、养分、水分等几种关键生态因子的不同处理,比较不同处理条件下其地下茎、地上竹株形态特征差异,分析美丽箬竹形态性状对各生态因子的适应情况,为竹子栽培提供依据。结果表明:(1)竹苗密度处理条件下,美丽箬竹地下茎形态指标随竹苗密度增大而逐渐减小,其地上竹株形态特征则以2鞭段处理表现最好,其次分别为3鞭段、对照、4鞭段处理;(2)光照处理美丽箬竹形态指标总体上随光照减弱而逐渐减小;(3)养分处理条件下,梯度2处理形态特征表现最好,对照最差;(4)水分处理条件下,间隔6 d浇水处理形态特征表现最好,对照最差。研究发现:(1)不同处理造成美丽箬竹地下茎、地上竹株形态特征发生复杂变化,最终导致竹子无性系种群生长拓殖能力的差异;(2)多因素藕合异质环境条件下美丽箬竹种群生理生长与生态行为及其形成机制仍需深入研究。
Beautiful bamboo is an excellent ornamental economic species of bamboo, the environmental ecological factors have a high sensitivity. The different treatment of several key ecological factors such as density, light, nutrient and water of bamboo seedlings were set up. The morphological differences of underground stems and aboveground bamboo under different treatment conditions were compared. The adaptability of the morphological traits to ecological factors was analyzed. Bamboo cultivation basis. The results showed that: (1) The morphological characteristics of the underground rhizomes of M. mongolicatum decreased with the increase of the density of bamboo shoots under the condition of bamboo seedling densities. The morphological characteristics of the aboveground bamboo plants were best treated by 2 lashes, followed by 3 (2) Under the light treatment, the morphological indexes of the Beauveria bream were generally decreased with the decrease of light intensity; (3) Under the condition of nutrient treatment, the morphological characteristics of the gradient 2 treatment performed the best, the control was the worst ; (4) Under the condition of water treatment, the morphological characteristics of watering at the interval of 6 d showed the best performance with the worst control. The results showed that: (1) The morphological changes of the underground stems and the aboveground bamboo plants under different treatments resulted in complicated changes in the morphological characteristics of the bamboo plants, leading to differences in the ability of colonization and growth of the clonal bamboo populations. (2) Under the multi-factor coupling and heterogenous environment, Population physiological growth and ecological behavior and its formation mechanism still need further study.