臺灣二期稻作增産研究品種與一、二期作産量之關係

Rice Yielding Increases for the Second Crop in Taiwan Genotype-season Interaction and Correlation between Yields of the First and Second Crop

鄧耀宗(Y. C. Teng)

《中華農業研究》 27卷3期 (1978/09) Pp. 213-222

https://doi.org/10.29951/JARC.197809.0002

摘要

以1971年2期至1975年1期之蓬萊稻區域試驗及1973年1期至1976年2期之秈稻區域試驗資料分析結果，蓬萊稻一期作以中南部產量最高，公頃平均產量在6噸以上。二期作以屏東減產最明顯，中部地區一、二期差異最少。秈稻的產量比稉稻高，唯北部地區二期作有明顯減產現象。一、二期稻作產量大部分地點呈正相關，少部分地點呈負相關但不顯著。各地區產量變方分析的結果，大部分地點均只期作間的差異達顯著水準。地點合併分析，結果蓬萊稻部分僅期作間的差異達1%的顯著水準，秈稻方面，品種間與期作間的差異均達1%的顯著水準。

並列摘要

The data of regional yield trials from 1971-Ⅱ to 1975-Ⅰ of Japonica rice and from 1973 Ⅰ to 1976-Ⅱ of Indica rice were used for studying genotype-season interaction and the correlation between yields of the first and second crop. For the most cases, it was found that the yields of the first crop and second crop were positively correlated. A few cases with negative correlation coefficient were obtained, but they were too small to be significant at 5% of probability. Variance analyses for the grain yields showed only the differences between seasons were significant at 5% of probability. Combined analyses for the different localities showed that significant differences for seasons were found for Japonica rice as well as for Indica rice, however, only Indica rice revealed the varietal differences at 1% of probaility.