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本文分析了水稻稀播旱育秧,少本插秧,超稀植栽培的产量构成。提出了公顷产量6450～14700kg群体以及主茎、第一二三次分蘖的产量结构;主茎、各级分蘖的产量性状值域以及与单穴粒重间的回归模型和相关系数;主茎及各级分蘖产量性状的变化规律。初步明确了在少本超稀植栽培条件下,分蘖的生产潜力主要在第二次分蘖。超稀植高产栽培应在稳定第一次分蘖产量性状的基础上,提高第二次分蘖产量性状占单穴同一性状平均值的比例。
The paper analyzes the composition of the rice seedling planted with drought-resistant seedlings, planting less transplanting seedlings and ultra-thin planting. The yield structure of the first and second or third tillering of 6450 ~ 14700kg hectare and main stem were presented. The yield traits of main stems and tillers at all levels and the regression model and correlation coefficient with the single grain weight were presented. Variation of tillering yield traits at all levels. Preliminary clear that in the rare ultra-thin planting conditions, tillering production potential mainly in the second tillering. On the basis of stabilizing the yield traits of the first tillering, the ratio of yield traits of the second tillering to the average value of the same trait of the single locus should be increased in ultra-thin-planting and high-yielding cultivation.