夏播紧凑型玉米黔单10号高产栽培技术研究

Cultivation Experiment for High Yield of Compact Type Maize Hybrid Qiandan 10 under Summer Sown Condition

对国家审定的紧凑型玉米黔单 10号 ,在每穴施等量基肥的条件下 ,于 2 0 0 0～ 2 0 0 1年进行了栽培密度、追氮量试验。结果表明 ,夏播黔单 10号的产量随密度和追N量 (尿素 )的增加而提高 ,反之则低。经方差分析结果表明 ,处理间、密度间、肥料间、年份间、密度×年份的产量差异均达 1%极显著水平。 每 6 6 7m2 最佳密度 35 0 0～ 4 0 0 0株和追N量(尿素 ) 4 0kg,平均产量为 810 .6 4～ 910 .83kg/ 6 6 7m2 ,较 30 0 0株 / 6 6 7m2 和追氮量 2 0kg/ 6 6 7m2 (CK)的增产 18.5 9%～ 19.9%。

Cultivating experiment on plant density and nitrogen fertilizer dressing norm of compact type maize (Hybrid) Qiandan 10, which was approved by National Crop Variety Supervisory Committee, was conducted in summer of 2000 and 2001. Results showed that the yield of Qiandan 10 rose with density and nitrogen fertilizer (carbamide) rising, vice versa under summer sown condition. The results of variance analyses proved that the differences among treats, i.e., density, nitrogen fertilizer, were significant at 0.01 level. The suitable measures were adopting the density of 3500 ～ 4000 plants and dressing 40 kg carbamide per 667m^(2), which obtained 18.59%～19.9% more yield than those of adopting the density of 3000 plants and dressing 20 kg carbamide per 667m^(2).