滴灌条件下杨树幼林树高、材积、生物量和N、P、K积累量模型研究

摘要

In order to research the growth, volume of timber, biomass and N, P, K nutrient accumulation of poplar 1 to 4 years under the station of drip irrigation. By using of R programming language software and analysis of growth, biomass, N, P ,K cumulant , the tree height change curve model was got by plotting iftting. The individual volume of timber model, optimal model of biomass and N, P, K nutrient accumulation were iftted by mathematical model. On the basis of statistical approach, the research selected optimal model to provide a theoretical basis for estimating the tree height, volume of timber, biomass and N, P, K accumulation of the poplar when it is dripping irrigation.%为了研究滴灌条件下杨树人工林幼林树高、材积、生物量及N、P、K积累量模型，针对1～4年生杨树人工林幼林，测定其生长量、生物量及N、P、K营养元素积累量，运用R语言软件进行统计分析，采用绘点拟合方式得出1～4年杨树幼林树高曲线方程；采用数学模型拟合1～4年生杨树幼林单株材方程式、生物量方程式以及N、P、K积累量方程式，并依据统计学从中选出最优模型。