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以超级杂交水稻两优0293为供试材料,设3个施肥水平:低N、135 kg/hm2,中N、270 kg/hm2,高N、405 kg/hm2,不施N肥为对照;密度也设3水平:33.3 cm×33.3 cm,26.6 cm×26.6 cm,26.6 cm×20.0 cm。试验采用裂区试验,以肥料为主区,以密度为副区,小区均随机排列,试验在不同栽插密度(行距)条件下,研究不同施肥量对超级稻产量及群体结构的影响,结论为以施N(270 kg/hm2)、密度(20.0 cm×26.6 cm)处理产量最高,群体结构最好。
Using super hybrid rice Liangyou 0293 as tested material, three fertilization levels were set as follows: low N, 135 kg / hm2, medium N, 270 kg / hm2, high N, 405 kg / hm2, Also set 3 levels: 33.3 cm × 33.3 cm, 26.6 cm × 26.6 cm, 26.6 cm × 20.0 cm. Experiments were carried out in split-plot experiment, with fertilizer as the main area, density as the sub-area and plots as random arrangement. The effects of different fertilizers on the yield and population structure of super-rice were studied under different planting densities (row spacing) The yield was the highest with N (270 kg / hm2) and the density (20.0 cm × 26.6 cm). The population structure was the best.