不同种植模式蔗茎伸长特性分析

Analysis of sugarcane stem elongation characters under different planting patterns

在大田条件下,以甘蔗品种新台糖22为试验材料,采用Logistic方程拟合了窄行宽株等行距、宽行窄株等行距、宽窄行窄株距和宽窄行宽株距4种种植模式下蔗茎的伸长特性。结果表明:(1)Logistic方程能够可靠的估计不同种植模式蔗茎伸长的进程。(2)不同种植模式蔗茎伸长的潜力值存在一定的差异,以宽窄行窄株距种植模式最大,且该差异的产生体现在蔗茎伸长持续时间或伸长速率上。(3)不同种植模式蔗茎伸长快增期的持续时间最短,但贡献率最大。因此,选择合理的种植模式和加强快增期的田间管理对蔗茎伸长具有重要的意义。

Sugarcane stem elongation characters of cv.ROC 22 were analyzed by logistic equation in ‘Ton-Sucrose Field’ under 4 planting patterns,narrow row broad plant,broad row narrow plant,broad-narrow row broad plant and broadnarrow row narrow plant.And the results were shown as followed.（1）Sugarcane stem elongation processes in ‘Ton-Sucrose Field’ under 4 planting patterns could be reliably estimated by Logistic Equation.（2） There was different stem elongation potential among 4 planting patterns,of which the broad-narrow row narrow plant pattern was the highest;and the difference came from elongation duration and elongation speed.（3）For all patterns,duration of Fast-increasing Period of stem elongation was the shortest,while its contribution was the highest.Therefore,appropriate plant pattern and good management in Fastincreasing Period is important for stem elongation.