玉米单交种豫玉27号高产栽培措施研究

High-yield Cultivation Measures of a Single-crossed Maize Hybrid `Yuyu No.27'

采用单因素随机区组设计对豫玉27号(原名洛单94 1)进行密度试验,结果表明:该品种对密度具有广适性,适宜种植密度为45000～75000株/hm2。采用N、P、K三因素旋转组合设计,通过计算机模拟寻优,建立了豫玉27号的产量—施肥量数学模型;分析了N(x1)、P(x2)、K(x3)的主效应及交互效应与产量的关系,它们对产量的影响大小依次为N、P、K。筛选出玉米产量大于等于10800kg/hm2的最优方案为:N393.15～399.15kg/hm2、P2O5171.90～175.05kg/hm2、K2O167.25～174.60kg/hm2,其比例为:2.3∶1∶1。

Density experiments were done about Yuyu No.27(original name Luo dan 941) by single factor random blocks. Results indicated the genotype had comprehensive adaptation, which optimum density was from 45 000 to 75 000 plants per hectare. Mathematical model, about Yuyu No.27 yieldamount of fertilizer application, was set up with rotation combination design through computers imitation, the relationship of yield, main factor and interactive factors of N(x1), P(x2), K(x3) was studied, the effects were N,P,K. The optimum program of maize yield ≥10 800 kg/ha was N 393.15～399.15 kg/ha, P2O5 171.9～175.05 kg/ha, K2O 167.25～174.6 kg/ha, the ratio was 2.3∶1∶1.