杂交早稻四个组合产量产量构成因素分析与生产对策

• 作 者: 郭进耀 潘晓华 万庆华 钟旭华
• 机 构: 江西农业大学水稻生理生态研究室,江西农业大学水稻生理生态研究室,江西农业大学水稻生理生态研究室,江西农业大学水稻生理生态研究室
• 出 处: 江西农业学报
• 发表日期: 1989年01期
• 关键词: 杂交早稻 产量构成因素 组合产量 通径分析 亩有效穗 每穗粒数 增穗 生产对策 穗粒结构 panicle

对四个早杂组合产量与产量构成的相关与通径分析表明,威优64每穗粒数对产量的直接作用和净作用最大,威优49、协优49和威优48-2均表现为有效穗对产量的直接作用和净作用最大.当亩有效穗少于25万和亩产低于500公斤时,增穗是增产的关键;而当亩有效穗超过25万和亩产高于500公斤时,关键是提高结实率.另外,本文提出了杂交早稻高产的穗粒结构,以及增穗和提高结实率的栽培途径.

The correlation and path analysis of the yield and yield components of four early hybrid combinations showed that the direct and net effects of grain yield per line were the highest in Weiyou 64, and that in Weiyou 49, Xieyou 49 and Weiyou 48-2 As the effective panicle on the direct effect of production and the net effect of the maximum.When acres of effective spike less than 250,000 and less than 500 kg per mu, increase the ear is the key to yield; and when more than 250,000 acres of effective spike per mu and more than 500 kg, the key is to improve the seed setting rate.In addition, the paper presents the high-yielding hybrid ear early grain structure, and by increasing ear and improve the planting rate of cultivation methods.