赣晚籼39号的产量结构分析与增产途径探讨

通过相关分析、通径分析和回归分析,阐述了赣晚籼39号的每穗实粒数、千粒重和有效穗数对产量的影响,结果表明:每穗实粒数对产量的影响最大,其次是有效穗和千粒重,各产量构成因素间存在一定程度的负相关。因此提出在稳定穗数的基础上,促壮秆大穗,提高群体质量,通过增加每穗实粒数,提高结实率来夺取高产。

Analysis on Yield Components of "Ganwanxian 39" and Discussion on Its Yield-increasing Approach

In this article,the effects of the three yield components of Ganwanxian 39 on its yield were analyzed by correlation analysis,path analysis and regressive analysis.The results showed that the number of filled grains per panicle had the greatest influence on the yield,followed by the productive panicles per hectare and 1000-grain weight.Negative correlation existed to some extent among the three yield components.Thus,the strategy for the high-yielding cultivation of Ganwanxian 39 is promoting strong stalk and large panicle,improving population structure,increasing the number of filled grains per panicle and seed setting rate on the basis of obtaining optimal productive panicles per unit area.