氮对冀西北饲用青玉米产量及品质的影响

Effect of Nitrogen on Yield and Quality of Forage Green Maize in the Northwest of Hebei Province

研究了追施氮肥对青玉米产量及品质的影响。结果表明,追施氮肥可显著提高青玉米的产量和秸秆粗蛋白质含量。每公顷追施纯氮450 kg时,玉米郑单958的鲜重和干重都达最高,每公顷分别为36 968.0和7 947.7 kg,氮的增产效果较好,每施1 kg纯氮可增加干重9.22 kg;同时,玉米秸秆粗蛋白质含量为88.4 g.kg-1,比对照增加了83.40%。

The effects of different application amounts of nitrogen on yield and quality of forage green maize were studied in the northwest of Hebei Province. The result showed that yield and straw crude protein contents of forage green maize were obviously increased after nitrogen application. When the application amount of nitrogen was 450 kg.hm^-2, forage green maize wet yield and dry yield were 36968.0kg.hm^-2 and 7 947.7 kg.hm^-2 respectively, straw crude protein contents was 88.4g.kg^-1 that was more than CK by 83.40%.