- Volume 29 Issue 8
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Effects of Nitrogen Application Rate on the Yields, Nutritive Value and Silage Fermentation Quality of Whole-crop Wheat
- Li, C.J. (Department of Grassland Science, South China Agricultural University) ;
- Xu, Z.H. (Department of Grassland Science, South China Agricultural University) ;
- Dong, Z.X. (Department of Grassland Science, South China Agricultural University) ;
- Shi, S.L. (Pratacultural College, Gansu Agricultural University) ;
- Zhang, J.G. (Department of Grassland Science, South China Agricultural University)
- Received : 2015.09.03
- Accepted : 2015.12.08
- Published : 2016.08.01
Whole-crop wheat (Triticum aestivum L.) as forage has been extensively used in the world. In this study, the effects of N application rates on the yields, nutritive value and silage quality were investigated. The N application rates were 0, 75, 150, 225, and 300 kg/ha. The research results indicated that the dry matter yield of whole-crop wheat increased significantly with increasing N rate up to 150 kg/ha, and then leveled off. The crude protein content and in vitro dry matter digestibility of whole-crop wheat increased significantly with increasing N up to 225 kg/ha, while they no longer increased at N 300 kg/ha. On the contrary, the content of various fibers tended to decrease with the increase of N application. The content of lactic acid, acetic acid and propionic acid in silages increased with the increase of N rate (p<0.05). The ammonia-N content of silages with higher N application rates (
Nitrogen Application;Nutritive Value;Silage;Whole-crop Wheat;Yield
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