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在大田条件下研究了不同氮肥处理对饲用玉米子粒和秸秆产量及品质的影响。结果表明:在施纯氮0~450 kg/hm2的范围内,随施氮量增加,玉米子粒和秸秆产量增加。当施氮量为375 kg/hm2时秸秆产量最高,当施氮量为450 kg/hm2时子粒产量最高。施氮量超过450 kg/hm2时,经济效益下降;随着施氮量的增加,秸秆粗蛋白含量逐渐上升,中性洗涤纤维、酸性洗涤纤维含量逐渐下降,半纤维素和纤维素含量呈下降趋势,改善秸秆品质。
Under field conditions, the effects of different nitrogenous fertilizer treatments on the yield and quality of fodder corn and straw were studied. The results showed that the yield of maize grains and straw increased with the application of nitrogen in the range of 0 ~ 450 kg / hm2 applying pure nitrogen. The straw yield was the highest when the nitrogen application rate was 375 kg / hm2, and the grain yield was the highest when the nitrogen application rate was 450 kg / hm2. The economic benefit decreased when the nitrogen application rate exceeded 450 kg / hm2. The content of crude protein increased gradually with the increase of nitrogen application rate. The content of neutral detergent fiber and acid detergent fiber decreased gradually while the content of hemicellulose and cellulose decreased Trend, improve straw quality.