【摘要】 应用四元二次正交回归设计试验方法 ,研究了毕节糯高粱在黔中地区的播种期、栽培密度和氮、钾肥施用量对产量及其主要经济性状和生育特性的影响 ,建立了相应的数学模型 ,得出毕节糯高粱在直播栽培条件下产量≥ 6 .0 t/ hm2 的高产栽培技术方案为 :播种期 4月 16～ 19日 ,栽植密度 12 .0～ 12 .5株 / m2 ,氮肥用量 12 6 .33～ 16 8.4 2 kg/ hm2 ,K2 O用量 190 .6 5～ 2 4 7.17kg/ hm2。更多还原

【Abstract】 Quadratic orthogonal regression design was used, relations between sowing period, density and N, P, K application level with yield, main economic and growth characteristics of Bijie glutinous sorghum in central Guizhou was studied, The mathematics model was set up. Bijie glutinous sorghum got the yield ≥6.0 t/ha by using direct seeding follows the plan: sowing in April 16～19 ,the culture density of 12.0～12.5 plants/m 2 , nitrogen fertilizer of 126.33～168.42 kg/ha, K 2O of 190.65～247.17 kg/ha.更多还原