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在密度为57000株/hm2的春播条件下对沈甜6号玉米品种进行5个施肥量试验。结果表明,在施用N187.5kg/hm2、P2O575.0kg/hm2、K2O97.5kg/hm2时产量最高,可产鲜穗13437.0kg/hm2,叶面积指数达到2.78,品质和各项生理指标处于较高水平。当施肥量超过N225.0kg/hm2、P2O590.0kg/hm2、K2O117.0kg/hm2时产量下降,茎秆含糖量和叶面积指数下降。
Under the condition of spring sowing with a density of 57000 plants / hm2, five fertilizer experiments were conducted on Shentian 6 maize varieties. The results showed that the highest yield was produced when applying N187.5kg / hm2, P2O575.0kg / hm2 and K2O97.5kg / hm2, which could produce 13437.0kg / hm2 of fresh ear and the leaf area index reached 2.78. The quality and physiological indexes were all higher Level. When the amount of fertilizer was more than N225.0kg / hm2, P2O590.0kg / hm2, K2O117.0kg / hm2, the yield decreased, the sugar content and the leaf area index decreased.