明1优臻占作烟后稻种植产量构成分析及机械化栽培技术

Yield Components and Mechanized Cultivation Techniques of Post-tobacco Rice Ming 1 Youzhenzhan

为探讨明1优臻占作烟后稻全程机械化生产合理产量结构和高产途径,对示范片20个样本的产量及构成因子进行相关分析和通径分析。相关分析表明,与产量相关系数最大的因子是有效穗数(r=0.9440^(**))达极显著水平,次为结实率(r=0.4495^(*))达显著水平,另外2个因子未达显著水平。通径分析表明,对产量贡献率最大的是有效穗数,结实率次之,每穗粒数第3。因此,明1优臻占作烟后稻推广应用时机械化栽培要做到早发稳发争足穗,巧施穗肥,注重增强后期防损能力,提高结实率以实现高产。

Correlation analysis and path analysis were used to explore the rational yield components and highyield pathway of whole mechanization production of post-tobacco rice Ming1youzhenzhan,20 sample yield and yield components were analyzed.The correlation analysis indicated that yield had significant relation with effective panicle number was(r=0.9440^(**)),and seed setting rate(r=0.4495^(*)),but not significant relation with spikelet number per panicle.Path analysis indicated that contribution rate for yield were as following:effective panicle number>seed setting rate>spikelet number per panicle.The key high yield cultivation points were promoting early sprout to form enough panicles numbers,scientifically application of panicle fertilizer to improve seed setting rate,enhancement loss prevention in late growth period.