頁籤選單縮合
題 名 | F47及 POJ 2725抽穗率對雨量之關係=The Polynomial Regression of Arrowing Percentage of F47 and POJ 2725 on teh Rainfall Distribution |
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作 者 | 孫逢吉; 莊培彥; | 書刊名 | 中華農學會報 |
卷 期 | 41 民52.03 |
頁 次 | 頁7-16 |
關鍵詞 | F47; POJ 2725; 抽穗率; 雨量; |
語 文 | 中文(Chinese) |
中文摘要 | (一)本文報告F47及POJ 2725等品種抽穗率與各年雨量之相關,僅為本所育種系歷年甘蔗抽穗資料之一部分,此項資料將陸續予以統計分析,藉以探明甘蔗抽穗與各種氣候因子之關係。 (二)F47與POJ 2725 二品種抽穗率之sin2θ對6、7、8月總雨量有顯著正相關,?此三個月雨量多之年份,F47與POJ 2725之抽穗多。其他四品種之相關係數不顯著。 (三)F47與POJ 2725之抽穗率之sin2θ對雨量之多項?歸亦呈頗為顯著之相關,或接近顯著度。從多項?歸係數求算理論抽穗率與實際調查而得之抽穗率,多數年份二者頗為接近。 |
英文摘要 | (1) The arrowing percentage of 6 cane varieties investigated in 1933~1947 were correlated with monthly rainfall of these years. Methods of simple correlatin and of polynomial regession were used. The results may be summarised as following. (2) Two out of the 6 varieties, F47 and POJ 2725, indicate that the arrowing percentage sin2θ are significantly and positively correlated with the total rainfall of June, July and August. This means that high arrowing percentage is associated with high total rainfall in June, July and August. The simple r between rainfall and arrowing percentage sin2θ of the other 4 varieties are insignificant. (3) Two varieties, F47 and POJ 2725, indicate that the polynomal regression of arrowing percentage sin2θon rainfall are highly significant. The reggression of other 4 varieties are, however, insignificant. (4) Study of the rainfall regression effect shows that more rainfall in a year than the normal average year in June through September would have the effect of increasing the arrowing percentage of that year. (5) The theoretical arrowing percentage sin2θ calculated by means of the polynomial regression coefficients of F47 and POJ 2725 fit fairly well to the actual values based upon X2 test. (6) In high temperature season, the effect of more or less rainfall on the arrowing percentage may be ascribed to the degree of the vegetative development of cane stalk attained before the formation of flower primordia, however, the correlations of 4 varieties out of 6 are insignificant, the writer is inclined to wait for further more data for final confirmation. |
本系統中英文摘要資訊取自各篇刊載內容。