Theme 2-2: Forage Production and Utilization--Poster Sessions
Description
Forage oat (Avena sativa L.) for livestock in Qinghai-Tibet Plateau may be used biomass under widely different altitude conditions. To assess the effect of altitude on the biomass of oats, we conducted an experiment to explore the adaptability of forage oat Jiayan No. 2 in different altitudes for better agronomic traits and higher forage yield. Four regions included Hezheng county (2207 m a.s.l) and Tianzhu county (2407 m a.s.l), Gansu province, Haiyan county (3042 m a.s.l), Qinghai province and Hongyuan county (3460 m a.s.l), Sichuan province were selected, and agronomic data as well as dry matter yield were determined. The results showed that the phenology of heading stage was between 75-80 days after sowing in four regions. The growing degree-days (GDDs) at the heading stage decreased with the increasing of altitude. There was significant difference among Hezheng, Tianzhu, Haiyan and Hongyuan. The plant height of forage oat was 116.67 ± 2.18, 119.47 ± 1.92, 101.52 ± 3.51, and 59.04 ± 6.86 cm, respectively. The leaves area index (LAI) of oats was 3.60 ± 0.61, 4.78 ± 0.91, 6.41 ± 0.96 and 1.08 ± 0.24, respectively. The forage yield was 11.96 ± 2.98, 11.35 ± 1.58, 11.99 ± 0.84 and 2.17 ± 0.36 t·ha-1. The absolute growth rate (AGR) of biomass was 27.15 ± 6.96, 24.84 ± 3.61, 35.63 ± 3.10 and 4.94 ± 0.95 g·m-2·d-1, respectively. From perspective of forage yield and plant height, planting forage oat below 3500 m a.s.l is a preferable way to stabilize forage production in Qinghai-Tibet Plateau.
Included in
Forage Yield of Oat on the Four Altitude Regions of the Qinghai-Tibetan Plateau
Forage oat (Avena sativa L.) for livestock in Qinghai-Tibet Plateau may be used biomass under widely different altitude conditions. To assess the effect of altitude on the biomass of oats, we conducted an experiment to explore the adaptability of forage oat Jiayan No. 2 in different altitudes for better agronomic traits and higher forage yield. Four regions included Hezheng county (2207 m a.s.l) and Tianzhu county (2407 m a.s.l), Gansu province, Haiyan county (3042 m a.s.l), Qinghai province and Hongyuan county (3460 m a.s.l), Sichuan province were selected, and agronomic data as well as dry matter yield were determined. The results showed that the phenology of heading stage was between 75-80 days after sowing in four regions. The growing degree-days (GDDs) at the heading stage decreased with the increasing of altitude. There was significant difference among Hezheng, Tianzhu, Haiyan and Hongyuan. The plant height of forage oat was 116.67 ± 2.18, 119.47 ± 1.92, 101.52 ± 3.51, and 59.04 ± 6.86 cm, respectively. The leaves area index (LAI) of oats was 3.60 ± 0.61, 4.78 ± 0.91, 6.41 ± 0.96 and 1.08 ± 0.24, respectively. The forage yield was 11.96 ± 2.98, 11.35 ± 1.58, 11.99 ± 0.84 and 2.17 ± 0.36 t·ha-1. The absolute growth rate (AGR) of biomass was 27.15 ± 6.96, 24.84 ± 3.61, 35.63 ± 3.10 and 4.94 ± 0.95 g·m-2·d-1, respectively. From perspective of forage yield and plant height, planting forage oat below 3500 m a.s.l is a preferable way to stabilize forage production in Qinghai-Tibet Plateau.
