CAJ | 학술논문

为筛选适宜在长沙地区推广种植的杂交早稻品种，以常规早稻品种湘早籼45号为对照，比较了陵两优104、陆两优611、T优705、陵两优396、陆两优211等杂交早稻品种的产量及其光合特性。结果表明：各品种产量差异显著，除陆两优211外，其他杂交早稻品种产量均高于对照，T优705和陵两优396产量较高，达7.1 t／hm2左右，显著高于对照；品种间产量构成因素、叶面积指数及光合特性指标差异显著。相关分析表明，有效穗数与产量呈显著正相关，其他因素与产量相关性不大；叶面积指数、净光合速率与产量相关性不大；产量与孕穗期叶绿素含量呈显著正相关，与齐穗期、灌浆期叶绿素含量呈负相关。可见，早稻产量高低是多因素综合作用的结果，本试验条件下T优705和陵两优396是6个品种中最适合在长沙地区种植的杂交早稻品种。
위사선괄의재장사지구추엄충식적잡교조도품충，이상규조도품충상조선45호위대조，비교료릉량우104、륙량우611、T우705、릉량우396、륙량우211등잡교조도품충적산량급기광합특성。결과표명：각품충산량차이현저，제륙량우211외，기타잡교조도품충산량균고우대조，T우705화릉량우396산량교고，체7.1 t／hm2좌우，현저고우대조；품충간산량구성인소、협면적지수급광합특성지표차이현저。상관분석표명，유효수수여산량정현저정상관，기타인소여산량상관성불대；협면적지수、정광합속솔여산량상관성불대；산량여잉수기협록소함량정현저정상관，여제수기、관장기협록소함량정부상관。가견，조도산량고저시다인소종합작용적결과，본시험조건하T우705화릉량우396시6개품충중최괄합재장사지구충식적잡교조도품충。
In order to screen out optimal early hybrid rice varieties suitable for planting in Changsha region,yield and pho-tosynthetic characters of 5 early hybrid rice varieties,Lingliangyou 104,Luliangyou 611,T you705,Lingliangyou 396 and Luliangyou 211,were compared with conventional early rice variety Xiangzaoxian No. 45 as control. The results showed that there existed significant difference in yield among 6 varieties,and yield of early hybrid rice varieties was higher than that of control except for Luliangyou 211,and the yield of T you 705 and Lingliangyou 396 was higher,about 7. 1t/hm2,which was significantly higher than that of control. There existed significant differences in yield components,leaf area index and photo-synthetic indexes among 6 varieties. There existed significant positive correlation between effective panicle and yield,while the correlation between others yield components and yield was not significant. Correlation between yield and leaf area in-dex,net photosynthetic rate was not significant. There existed significant positive correlation between yield and chlorophyll content in booting stage,and there existed negative correlation between yield and chlorophyll content in heading stage and filling stage. The results indicated that yield of early rice was jointly decided by many factors. Considering from yield of 6 varieties,T you 705 and Lingliangyou 396 were the optimal varieties suitable for planting in Changsha region.