【摘要】 以前期育成的8个高原杂交粳稻新组合为研究对象,对其产量及主要农艺性状进行比较分析.结果表明,品种KZ108与KZ101,KZ111,楚粳27这3个品种差异有统计学意义,其中穗粒数与实粒数、实粒数与结实率都存在极显著正相关,实粒数与着粒密度存在显著正相关;有效穗与着粒密度、千粒质量与结实率存在极显著负相关.其余品种间差异均无统计学意义,但与对照相比也存在一定的竞争优势.表明滇型杂交粳稻新组合KZ108,KZ110,KZ106,KZ104具有较好的推广应用前景.更多还原

【Abstract】 Taking the eight new combinations of Japonica hybrid rice as the study object,the yield and main agronomic traits were analyzed.The result showed that the difference within the varieties of KZ101,KZ111 and Chujing 27 presented great significance in statistics;and the grain number per spike and grain number as well as grain number and seed-setting rate had extremely significant positive correlation,while the effective panicles and grain density,and the grain weight and seed-setting rate had a significant negative correlation,and that no difference existed among other varieties though certain competitive advantages occurred.According to the analysis mentioned above,the new combinations of Dian-type hybrid rice KZ108,KZ110,KZ106 and KZ104 have a good prospect of application and extension in growth.更多还原