早籼金早09直播高产群体经济性状与产量分析

Analysis of Economic Characters and Yield of Direct-seeding High-Yielding Population in Early Indica Jinzao 09

通过2009～2012年的多年多点金早09直播稻示范方的建立,金早09的高产潜力以及适应不利气候环境的能力得到了充分体现,通过相关和通径分析表明:有效穗对金早09直播稻的产量贡献最大,穗实粒数次之。线性回归分析表明:金早09直播稻产量达7500 kg/hm2以上,有效穗、穗实粒数2个性状在95%的置信区间分别为(349.82±8.36)万/hm2、(101.32±3.17)粒,这将为金早09直播稻高产群体结构的搭建提供有力依据。

The high-yielding potential and adversity resistance of direct-seeding Jinzao 09 have been fully proved through the multi-year and multi-point demonstration during 2009~2012.It indicated that the effective spikes had the largest contribution to the yield,and followed by the filled grains per spike according to correlation and path analysis.Linear regression analysis results showed that： when the yield was more than 7500 kg/hm2,the effective spikes and filled grains per spike in 95% confidence interval were（349.82±8.36） ×104/hm2 and（101.32±3.17） grains,respectively.This could provide a strong basis for its construction of high-yielding population.