Abstract: Wild Barley is an important forage to control saline and alkali degraded grassland in northeast China,and scientific and reasonable fertilization can effectively improve the grass yield and nutrient quality of forage. The effects of different fertilization periods and amount on hay yield and nutrient quality of wild barley were studied in this experiment. The fertilization period included green period,extraction period and heading stage. The amount of fertilizer was 0,225,300,375,450,525,600 kg·hm^-2 seven level. The results showed that fertilization effectively improved the yield and nutritional quality of wild barley hay,among which 525 kg·hm^-2 fertilization was the best during the extraction period,and the hay yield was 5.93 t·hm^-2,increasing by 51.27% compared with the control (no fertilization).The crude protein content was 12.98%,which increased by 92.01% compared with the control. The content of crude fat was 3.64%,an increase of 195.93% over the control.

Key words: Fertilization, Wild barley, Yield, Nutritional quality

摘要： 野大麦（Hordeum brevisubulatum（Trin.） Link.）是治理东北地区盐碱退化草地的重要牧草，科学合理的施肥能够有效提高牧草的产草量及营养品质。本试验研究了不同施肥时期及施肥量对野大麦干草产量及营养品质的影响。施肥时期分别为返青期，拔节期和抽穗期，施肥量设225，300，375，450，525，600 kg·hm^-26个水平，以不施肥做为对照。结果表明：施肥可有效提高野大麦干草产量和营养品质，其中在拔节期，施肥量为525 kg·hm^-2时施肥效果最佳，其干草产量达5.93t·hm^-2，比对照（不施肥）增加了51.27%；粗蛋白含量为12.98%，比对照增加了92.01%；粗脂肪的含量为3.64%，比对照增加了195.93%。

关键词: 施肥, 野大麦, 产量, 营养品质