单叶省藤的丛栽效应

Effects of Group-planting on Calamus simplicifolius Wei

以单株种植为对照,通过设置2株、3株和4株共3个水平的丛栽试验对单叶省藤的丛栽效应进行分析.结果表明:①母茎保存率随丛栽株数的增加而降低,且均低于单株种植时的母茎保存率,各丛栽水平间的差异未达显著水平;藤丛保存率均达到100%,高于单株种植时的保存率.②丛栽对植株萌蘖数和藤丛平均株数具有显著的影响,植株萌蘖数和藤丛平均株数分别随丛栽株数的增加而呈递减和递增的变化.③丛栽分别对植株母茎长和藤丛总茎长产生明显的负面和正面效应;与单株种植相比,丛栽抑制植株母茎的生长,但有利于增加藤丛总茎长.④丛栽株数对植株的平均直径和节间长也有显著影响,但二者主要在单株种植与3、4株丛栽之间有显著差异.⑤随着丛栽株数的增加,藤条的产量也逐渐递增;与单株种植相比,丛栽可以显著提高藤林的产量;仅2株丛栽与4株丛栽之间的藤条产量有显著差异.⑥进一步的经济分析表明,2株丛栽可获得最高的经济收益,因而在进行丛栽时以2株丛栽为宜.

Effects of group-planting on Calamus simplicifolius Wei were evaluated based on some experiments of planting 2, 3 and 4 seedlings per group versus planting single seedlings. The results show that the survival rate of mother stem decreases gradually with the seedling number per group and is lower in group-planting than in single-planting but there are no significant differences among the various treatments ; that all survival rates of clump at different levels of group-planting are 100 ~, higher than that of single-planting that group-planting decreases significantly both suckering shoot number and mother stem length but increases dramatically both plant number per clump and total length per clump; that group-planting also has a significant effect on both mean diameter and mean internode length and the difference between single-planting and 3-and 4-seedling planting per clump is highly significant ; and that cane yield increases with the seedling number per group and is higher in group-planting than in single-planting, showing sharp differences between group-planting and single-planting treatments but with no obvious difference within group-planting itself. A further economic analysis shows that 2-seedling per group planting produces the best result among the three levels of group-planting.