特用玉米模式化栽培试验研究

Study on Modeled Cultivation of Special Kind Maize

以影响黑糯玉米产量的氮肥、磷肥、密度等限制因子为自变量,进行通用回归旋转设计,以籽粒产量建立数学模型并分析,提出了黄土高原生产特种玉米的高产、高效栽培模式。分析得出黄土高原特种玉米产量和毛收益最佳组合为:施氮466.5kg/hm2、施磷426.0kg/hm2,密度为10.95万株/hm2时,最高单产可以达到11.175t/hm2;施N424.5kg/hm2,P2O5211.5kg/hm2,保苗7.05株/hm2时,最高毛收益可达到1.236万元/hm2,经济效益显著。

The experiment puts forword the loess piateau the productor the special kind corn high to produce and educate the mode efficiontly praead the in general rotational regression design, establishing the mathematics model with output of the seed, with the main influence factor that nitrogen fertilizer P2O5 density etc. in black glutinous corn yield.It is limit the factor the loess plateau produce the special kind corn with high yield and gross income is the more best to make up for:construct 466.5 kg/ha nitrogen ,phosphorus fertilizer 426.0 kg/ha when the density is 1.095×10~4 plant/ha,the tallest single yield will amount to 11.175) t/ha;constructs 424.5 kg/ha N, 211.5 kg/ha P2O5,when keeping a full stand of seedings 7×10~4 plant/ha,supreme hair income can be up to 1 236 Yuan RMB.economic benfits are remarkable.