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分析结果表明:在中等肥力棕黄土上施肥能使玉米显著增产,并使其品质有所改善.1、使蛋白质相对含量普遍提高1—2%,绝对含量提高21.3～28.3kg/亩,趋势为 O+NP>NPK>NP>CK;2、淀粉相对含量的变化与蛋白质相反,二者呈极显著的负相关,但绝对含量施肥处理明显高于对照,肥料间差异不明显;3、炭分相对含量较稳定;4、不同玉米品种时肥料的反应各具特点;5、O+NP 处理养分全面,增产显著,同时使籽粒中蛋白质、淀粉和灰分的总产量高于其它肥料处理.
The results showed that fertilizing moderate brown medium loess resulted in significant increase of corn yield and improvement of its quality.1 The relative content of protein was generally increased 1-2% and the absolute content increased by 21.3-28.3 kg / mu, the trend was O + NP> NPK> NP> CK; 2, the relative content of starch and protein opposite, the two showed a significant negative correlation, but the absolute content of fertilization was significantly higher than the control, The relative content is relatively stable; 4, the reaction of different maize varieties have their own characteristics; 5, O + NP treatment of nutrients comprehensive, significant increase in production, while the grain protein, starch and ash production than other fertilizer treatment.