甘肃几个大麦品种茎秆形态生长模型试验研究

摘要

Based on the three different varieties of barley for testing materials which has been cultivated and intro-duced in Gansu,through two continuous observation and quantitative analysis for the stem growing process of three vari-eties barley with different sowing time,has structured a dynamic simulation model for the barley stalk growing process in Gansu .In this research,the Logistic Equation Model has been used to describe the dynamic process of different intern-ode length and diameter .The root mean square error (RMSE)method has been adopted to inspect the different varieties of barley .The model inspected results showed that:For the different internode length and diameter of different varieties of barely,the forecasting value of the average root mean square errors(RMSE)were between 0.2371~1 .0613 cm and 0.0142~0.0775 cm,respectively.The test has indicated this models possessed good predictability and reliability.%以甘肃培育和引种的三种不同品种大麦为供试材料，通过对不同播期三种试验大麦茎秆生长过程的两轮连续观测和定量分析，构建了甘肃大麦茎秆生长过程的动态模拟模型。本研究采用Logistic方程模型描述了不同节间长度和粗度以及节间伸长和增粗的动态过程，并采用根均方误（RMSE）方法对不同品种大麦进行检验，模型检验结果显示，不同品种的不同节间长和节间粗，其预测值的平均RMSE值范围分别在0．2371～1．0613 cm和0．0142～0．0775之间。试验表明本模型具有较好的预测性和可靠性。