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于2011和2012年,采用裂区设计,以超高产早稻淦鑫203、中嘉早17和晚稻淦鑫688、五丰优T025为材料,在31.20万蔸/hm2密度下,研究了行/株距比(RS/IS)对超高产早晚稻产量和上部三叶形态特征的影响。结果表明,早晚稻四品种产量均以RS/IS2.0处理(25.0 cm×12.8 cm)较高,每穗粒数均以RS/IS2.8处理(30.0 cm×10.7 cm)较多,千粒重均以RS/IS1.3处理(20.0 cm×16.0 cm)较重,而生物产量、氮素积累总量和氮肥表观利用率均以RS/IS5.0处理(40.0 cm×8.0 cm)较低。早晚稻四品种的倒二叶基角和开张角以RS/IS5.0处理较大,以RS/IS2.0处理较小;倒二叶叶面积以RS/IS5.0处理较大,RS/IS1.3处理较小。
In 2011 and 2012, using the split-plot design, we studied the relationship between row / plant spacing at the density of 310 000 蔸 / hm2 using super high-yielding early rice Ganxin 203, Zhongjia-early-17 and late rice Ganxin 688 and Wufengyou T025 as materials. Effect of RS / IS on Yield and Top - trefoil Morphological Traits of Super - high Yielding Hybrid Rice. The results showed that the yield of four varieties of early and late rice was higher under RS / IS 2.0 treatment (25.0 cm × 12.8 cm), and the grain number per spike was more by RS / IS 2.8 (30.0 cm × 10.7 cm) RS / IS1.3 treatment (20.0 cm × 16.0 cm) was heavier, but the yield of biomass, the total amount of nitrogen accumulation and apparent nitrogen use efficiency were all lower by RS / IS5.0 treatment (40.0 cm × 8.0 cm). The second leaf base angle and opening angle of the four varieties of early and late rice were larger with RS / IS5.0 treatment and smaller with RS / IS2.0 treatment; the area of second leaves with RS / IS5.0 treatment was larger, RS / IS1.3 is smaller.