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本文应用直线回归、直线相关及多元回归分析方法,分析了杂交粳稻秧苗地上部分体积与秧苗素质及产量的关系,得出了秧苗地上部分体积(V)与苗高(y_1)单株绿叶数(y_2)登基宽(y_3)单株分蘖数(y_4)单株地上部干物重(y_5)及产量(y)的回归方程式分别为:y_1=20.359+3.478V,r_1=0.930~(**)y2=2.890+0.984V,r_2=0.902~(**);y_3=0.622+0.177V,r_3=0.949~(**);y_4=-0.052+0.227V,r_4=0.739~(**);y_5=-0.086+0.141V,r_5=0937;y=9.560+0.210or0.738.;秧苗素质与秧苗地上部分体积之间的多元回归方程为:犷二一3 .2553+0 .0723:一0.0081:+3.1177夕:+0.0043夕’+1.3976挑。用以上直线回归方程对秧苗素质进行预测,方法简便易行,数值准确可靠,为从事水稻科研工作者提供了很大方便。水稻的秧苗素质,是衡量秧苗壮弱的标推,其主要包括苗高、单株绿叶数、茎基宽、单株分孽数及百苗干重等。在多年科研实践中侧定秧苗素质时,偶然发现秧苗地上部分体积 (以下简称秧苗体积)与秧苗素质之间存在稳定的相关关系,而常规测定秧苗素质特别是平均单株干物重,须经日晒或烘干,花费时间较长,且需一定的能源和设备,如能从测定体积来间接衡量其干重,则方法简便,立时可以测得结果。因此,今年结合杂粳的高产栽培试验对秧苗素质认真进行了测定,对测定结果进行了回归及相关分析,期望能为用秧苗体积来间接测定秧苗素质及预测产量,提供若干科学依据。
In this paper, the relationship between aboveground part volume and seedling quality and yield of japonica hybrid rice was analyzed by using the method of linear regression, linear correlation and multiple regression analysis, and the relationships between the aboveground part volume (V) and seedling height (y_1) The regression equation of dry matter weight (y_5) and yield (y) of single plant tiller number (y_4) was: y_1 = 20.359 + 3.478V, r_1 = 0.930 ~ (**) y2 = 2.890 + 0.984V, r_2 = 0.902 ~ (**); y_3 = 0.622 + 0.177V, r_3 = 0.949 ~ (**); y_4 = -0.052 + 0.227V, r_4 = 0.739 ~ -0.086 + 0.141V, r_5 = 0937; y = 9.560 + 0.210or0.738. The multiple regression equation between the seedling quality and the aerial part of the seedling was: 3.1177 evening: +0.0043 Xi ’+1.3976 pick. Using the above linear regression equation to predict the quality of seedlings, the method is simple and easy to operate, the data are accurate and reliable, and it is very convenient for rice researchers. The quality of rice seedling is a measure of the weakness of seedlings, which mainly includes the height of seedling, the number of green leaves per plant, the width of stems, the number of plants per plant and the dry weight of seedlings per plant. In the years of scientific research practice lateral seedling quality, occasionally found that the seedling above ground part of the volume (hereinafter referred to as seedling volume) and the quality of seedlings there is a stable correlation between the conventional determination of seedling quality, especially the average dry weight per plant, Drying or drying takes a long time and requires certain energy and equipment. If the dry weight can be indirectly measured from the measured volume, the method is simple and the result can be measured immediately. Therefore, this year combined with high-yielding hybrid japonica cultivation test on the quality of seedlings were carefully measured, the results of the regression analysis and correlation analysis, expect to seedling volume can be used to indirectly determine the quality of seedlings and predict the yield, to provide some scientific evidence.