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在不同栽培密度条件下 ,对水稻新品种“吉农大 7号”生育指标及产量构成性状因子进行研究分析表明 :随着栽培密度的降低 ,“吉农大 7号”的分蘖力提高 ,叶片数增加 ,生育期延长。不同栽培密度条件下“吉农大 7号”的穗数、粒数、叶面积指数差异明显 ,而株高只有在 30cm× 13 2cm密度下较其他密度明显变矮 ,千粒重基本趋于稳定。“吉农大 7号”的最适栽培密度为 30cm× 19 8cm即 (17穴 /m2 ) ,产量可达 95 0 0kg/hm2以上。
Under different planting densities, the growth and yield traits and yield traits of a new rice variety “Ji-nongda 7” were studied. The results showed that with the decreasing of planting density, the tillering ability of “Ji-nongda 7” increased and the number of leaves increased , Growth period is extended. Under the different planting densities, the number of panicle, grain number and leaf area index of “Ji Nongda 7” were significantly different. However, the height of 1000-grain weight tended to be stable only under the density of 30cm × 13 2cm. The optimum cultivation density of “Jinongda 7” is 30cm × 198cm (17 holes / m2), and the yield can reach 95 0 0kg / hm2 or above.