SigmaPlot分析玉米茎秆含糖量与生育期关系

为了解新品种浙甜6号(超甜玉米)、浙糯玉6号(糯玉米)茎秆含糖量与生育期的关系,指导青秆适时收获用于牲畜饲料,用SigmaPlot 10.0软件对茎秆含糖量与生育期关系进行非线性回归分析,结果表明:浙甜6号、浙糯玉6号茎秆含糖量与生育期的非线性方程分别为f=5.0297+0.6714x-0.0264x2+2.9640E-04x3、f=5.0077+0.5294x-0.0174x2+1.4830E-04x3,由此可知,随着生育进程推进,浙甜6号茎秆糖含量表现为"低-高-平稳下滑"的变化趋势,浙糯玉6号茎秆糖含量表现为"低-高-快速下降"的变化趋势。

Analysis of Relationship between Stalk Sugar Content and Growth Period of Maize by Using SigmaPlot

To understand the relationship between stalk sugar content and growth period of new maize varieties Zhetian 6 （ su- per - sweet maize） and Zhenuoyu 6 （ waxy maize） , and to guide the timely harvest of green stalk for livestock feed, the author ear- fled out the nonlinear regressive analysis by using the software SigmaPlot 10.0. The nonlinear regressive equations describing the re- lationship between stalk sugar content and growth period of Zhetian 6 and Zhenuoyu 6 were respectively built as follows： f= 5. 0297 ＋ 0. 6714x -0. 0264x~ ＋ 2. 9640 ~ 10 4 x3 , f = 5. 0077 ＋ 0. 5294x -0. 0174xz ＋ 1. 4830 x 10-4 x3. According to the above equa- tions, when the growth and development of maize advanced, the stalk sugar content of Zhetian 6 revealed the changing trend of ＂low - high - smooth decline＂, while that of Zhenuoyu 6 showed the trend of ＂low - high - fast decrease＂.