Effects of nitrogen level and harvest time on biomass yield and energy characteristics of switchgrass

Li-xin Gao; Jing Liu; Bo Deng; Fu-yu Yang; Yun-wei Zhang

doi:10.11829/j.issn.1001-0629.2015-0401

Pratacultural Science > 2016 > 10(1): 110-115. > DOI: 10.11829/j.issn.1001-0629.2015-0401

Li-xin Gao, Jing Liu, Bo Deng, Fu-yu Yang, Yun-wei Zhang. Effects of nitrogen level and harvest time on biomass yield and energy characteristics of switchgrass[J]. Pratacultural Science, 2016, 10(1): 110-115. DOI: 10.11829/j.issn.1001-0629.2015-0401

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Effects of nitrogen level and harvest time on biomass yield and energy characteristics of switchgrass

1.
1. College of Animal Science and Technology, Chinese Agriculture University, Beijing 100193, China
2.
2. College of Animal Science and Technology, Jilin Agriculture University, Changchun 130118, China
3.
4.
College of Animal Science and Technology, Chinese Agriculture University, Beijing 100193, China
5.
College of Animal Science and Technology, Chinese Agriculture University, Beijing 100193, China

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Received Date: July 11, 2015
Published Date: January 19, 2016

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Abstract

Abstract

The study evaluated the effects of nitrogen application level and harvest time on the productivity and energy characteristics of switchgrass in saline-alkali soil of Yellow River Delta in China. The results demonstrated that nitrogen could significantly increase the biomass of switchgrass. The highest yield of switchgrass was obtained at the fertilization of 200 kg N·ha-1(P0.01). The biomass, ash, nitrogen and lignocellulose contents of switchgrass showed a significant response to the harvest time(P0.05); As the harvest time delayed, the content of lignocelluloses increased, and it reached the highest in winter and the optimal nirtrogen level was 100 kg N·ha-1. However, the ash content and nitrogen content showed a downward trend by delaying the harvest time. Therefore, our study suggested the high quality switchgrass will be obtained when harvest in winter and with the fertilizer application of 100~150 kg N·ha-1 in the Yellow River Delta .
- switchgrass,
- saline-alkali soil,
- nitrogen application,
- harvest time,
- energy characteristics

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References

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