不同施肥处理对地菍早期冠层扩展速度的影响

采取正交施肥试验设计研究不同施肥处理对地菍(Melastoma dodecandrum)植株生长早期冠层扩展速度的影响。结果表明,不同施肥量及其配比对地菍单株冠层覆盖面积的扩展速度具有显著影响,而对单株叶面积指数影响不显著;在中等肥力的熟化红土上,种子繁殖的植株在幼苗移栽返青后的3个月内N、P2O5、K2O的最佳配合施用量为5.412、3.513和2.451 g/株,80 d内冠层覆盖面积扩展了5.66~5.91倍。

Effects of fertilization on canopy expansion of Melastoma dodecandrum in early growth stage

A fertilization experiment with orthogonal design was used to study the effects of different fertilization treatments on the canopy expansion of Melastoma dodecandrum in early growth stage. The results showed that the difference of canopy expansion of individual plant among treatments were significant, but not for the leaf area index. In mellow red clay soil with moderate fertility, the best fertilization rates of N, P2O5, K2O were 5.412 g/plant, 3.513 g/plant and 2.451 g/plant within the first 3 months after the transplanted seedlings turned to green. And the canopy cover area of individual plant increase by 5.66 to 5.91 times within 80 days.