论文部分内容阅读
为了探讨干热河谷盆地辣木种植密度与分枝格局和生物量的关系及较为合理的种植密度,通过野外实地调查和数据分析对该地区不同栽培密度辣木人工林分枝格局及生物量进行研究,结果表明:辣木林分在株高、地径、冠幅以及分枝数量方面与栽培密度呈现显著负相关;不同密度下,根、茎、叶生物量及果荚数和果荚均长、直径和果荚均仔粒数之间都存在显著的差异性;栽培密度对辣木的分枝格局有较显著影响,主要表现在一级/二级分枝率、二级/三级分枝率以及三级分枝长度上有显著差异;辣木在不同方位上分枝格局有明显差异,主要体现在主、侧枝分枝长度和一级分枝角度上的差异显著;在本试验范围内,以叶用辣木为培育目标的较适宜的栽培密度为株行距0.9m×0.9m,以果用为栽培目标的较适宜的栽培密度为株行距1.5m×1.5m。在不同的栽培密度下,辣木人工林之间分枝格局及生物量的显著性差异,反映了辣木随环境的变化具有较高的形态可塑性和生态适应性。
In order to investigate the relationship between the planting density and the branch pattern and biomass of dry mouthed valley and the more reasonable planting density, the branch pattern and biomass of Millaume plantations with different cultivation density in the area were investigated through field investigation and data analysis The results showed that there was a significant negative correlation between the plant height, diameter, crown width and branch number of moringa woods and the planting density. Under different densities, the biomass, number of pods, and length of pods , The diameter and the number of seeds per pod have significant differences. The planting density has a significant effect on the branching pattern of Moringa, which is mainly manifested in the primary / secondary branching rate, secondary / tertiary fraction The branch rate and the length of the three branches were significantly different. The branch pattern of Moringa in different orientations was significantly different, which was mainly manifested in significant differences in the main branch length and the first branch branch angle. In the scope of this test Within the leaves with Moringa cultivation objectives for the more appropriate planting density for the spacing of 0.9m × 0.9m, the fruit for the cultivation of the target planting density for the line spacing 1.5m × 1.5m. Under different cultivation densities, the significant difference in the branch pattern and biomass between Moringa arborvitae wood plantations reflected the high plasticity and ecological adaptability of Moringa with the changes of environment.