摘要
通过对影响笋产量的12个因子(立地等级、表土层厚度、均匀度、整齐度、立竹密度、Ⅰ度竹立竹密度、Ⅱ度竹立竹密度、Ⅲ度竹立竹密度、Ⅳ度竹立竹密度、叶面积指数、大年竹立竹密度、大年竹株数百分比)的调查,并进行多元回归,建立了笋产量预测模型:Y出笋数=-73.1785+0.5890X1—0.4401X2+0.6464X3+227.5612X4,其中立竹密度X1和大年竹株数百分比X4对笋产量影响关系密切。
By means of the survey of twelve factors affecting the bamboo shoot yield and the multivariate regression, the bamboo shoot yield model was set up: Y=-73. 1785+0.5890X1-0. 4401X2+0. 6464X3+227.5612X4, where the effects of standing bamboo bensity X1 and bamboo number percentage on year X4 on the bamboo shoot yield are large.
出处
《福建林业科技》
北大核心
1997年第3期24-27,共4页
Journal of Fujian Forestry Science and Technology
关键词
毛竹
笋产量
模型
Phyllostachys pubescens, bamboo shoot yield, model