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以保粳杂2号为研究对象,在气候和生产技术基本一致的条件下,研究在高、中等2种不同肥力田块条件下栽插密度的效应。结果表明,不同肥力田块栽培密度对水稻产量的影响不同,中肥力田块所要求的栽插密度比高肥力田块高,其中高肥试点产量最高的密度处理是28.5万丛/hm2,中肥试点产量最高的密度是33.0万丛/hm2;通过密度与产量构成因素的相关性分析可知,栽培密度与有效穗、成穗率、穗粒数、结实率、总茎蘖数、生物产量、经济系数、株高、播始历期、全生育期等有关,且有规律性变化,与千粒重关系不密切。
Taking Japonica hybrid rice 2 as the research object, under the condition of basically the same climate and production technology, the effect of planting density under two kinds of high and medium fertile land plots was studied. The results showed that the planting density of different fertility plots had different effects on rice yield. The densities of transplanting medium-high fertility plots were higher than those of high-fertility plots, and the highest density of high-fertilization plots was 285,000 pl / hm2 According to the analysis of the correlation between the density and the yield components, the correlation between the planting density and the effective panicles, the percentage of spikelets, the number of grains per spike, the percentage of seed set, the total number of stems and tillers, the biomass, Economic coefficient, plant height, sowing date, the whole growth period and other related, and regular changes, and 1000 grain weight is not closely related.