福建杂交玉米单作栽培技术研究

Studies on Monoculture Technology of Hybrid Corn in Fujian Province

在单因素与多因素正交试验的基础上 ,采用二次回归正交旋转组合设计 ,对福建杂交玉米单作栽培的 4项主要农艺措施进行田间试验。结果表明 ,播种期对杂交玉米产量影响最大 ,呈负向线性关系 ,种植密度与播种期、施氮量、追肥方法之间存在着显著互作效应。福州地区每公顷 52 50kg以上的优化栽培组合方案是 :7月 2 5日至 8月 5日间适时早播 ,每公顷保苗基本苗750 0 0～ 82 50 0株 ,施氮素 150～ 180kg ,基肥 :拔节肥 :穗肥为 3∶3∶4。

Based on orthogonal experiment of single and multiple factors,the field experiment for 4 main agronomy measures of hybrid corn monoculture in Fujian province was carried out by guadratic regression orthogonal rotary combine design.The results showed that the sowing period greatly influenced yield of hybrid corn,which appeared negative linear relation.and there were significant interactions between planting densities,sowing period,amount of nitrogen applied and application methods.The selective preference cultivation combination for yields over 5 250kg per ha.in Fuzhou district was :proper sowing period from 2th July to 5th August,75 000～82 500 plants and application of 150～180 kg nitrogen per ha.The ratio of application ofbase.stem elongation and ear fertilizer respectively was 3:3:4.