Acta Prataculturae Sinica ›› 2022, Vol. 31 ›› Issue (9): 26-35.DOI: 10.11686/cyxb2021374
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Wei GAO(), Na SHOU, Cong-ze JIANG, Ren-shi MA, Yu-ying SHEN, Xian-long YANG()
Received:
2021-10-18
Revised:
2022-01-17
Online:
2022-09-20
Published:
2022-08-12
Contact:
Xian-long YANG
Wei GAO, Na SHOU, Cong-ze JIANG, Ren-shi MA, Yu-ying SHEN, Xian-long YANG. Effect of nitrogen application rate on dry matter accumulation, allocation and water use efficiency of forage sorghum[J]. Acta Prataculturae Sinica, 2022, 31(9): 26-35.
年份 Year | 处理 Treatments | 拔节期Jointing stage | 开花期Flowering stage | 收获期Harvesting stage | ||||
---|---|---|---|---|---|---|---|---|
叶Leaf | 茎Stem | 叶Leaf | 茎Stem | 叶Leaf | 茎Stem | 穗Ear | ||
2019 | N0 | 61.0±1.65a | 39.0±1.65a | 19.6±0.73b | 80.4±0.73a | 14.6±0.12b | 75.5±0.98a | 9.9±0.90b |
N80 | 62.4±1.49a | 37.6±1.49a | 19.2±0.53b | 80.8±0.53a | 14.6±0.38b | 69.3±0.29b | 16.1±0.66a | |
N160 | 62.6±0.79a | 37.5±0.79a | 18.6±1.05b | 81.4±1.05a | 15.1±0.04ab | 70.0±0.82b | 14.8±0.82a | |
N240 | 61.0±0.52a | 39.4±0.52a | 18.3±0.39b | 81.7±0.39a | 16.0±0.47a | 70.1±2.14b | 13.9±1.67a | |
N320 | 59.4±1.63a | 41.0±1.63a | 23.4±0.93a | 76.6±0.93b | 15.0±0.25ab | 69.3±0.59b | 15.7±0.84a | |
2020 | N0 | 68.4±1.85a | 31.6±1.85a | 14.0±0.73a | 86.3±0.73a | 20.0±0.32a | 71.0±0.69a | 9.1±1.01a |
N80 | 68.7±3.19a | 31.3±3.19a | 16.4±2.78a | 83.6±2.78a | 16.6±1.38ab | 72.6±3.25a | 10.7±1.93a | |
N160 | 68.9±1.26a | 31.1±1.26a | 15.1±2.50a | 84.9±2.50a | 15.9±2.24ab | 74.2±1.58a | 9.9±0.90a | |
N240 | 71.8±3.42a | 29.2±3.42a | 15.4±1.41a | 84.6±1.41a | 15.9±0.56ab | 74.6±0.93a | 9.5±1.48a | |
N320 | 68.4±3.26a | 31.6±3.26a | 15.0±1.08a | 85.0±1.08a | 13.6±0.52b | 76.5±0.73a | 10.0±1.22a |
Table 1 Effects of different nitrogen treatments on dry matter allocation of forage sorghum in different growth stages of 2019 and 2020 (%)
年份 Year | 处理 Treatments | 拔节期Jointing stage | 开花期Flowering stage | 收获期Harvesting stage | ||||
---|---|---|---|---|---|---|---|---|
叶Leaf | 茎Stem | 叶Leaf | 茎Stem | 叶Leaf | 茎Stem | 穗Ear | ||
2019 | N0 | 61.0±1.65a | 39.0±1.65a | 19.6±0.73b | 80.4±0.73a | 14.6±0.12b | 75.5±0.98a | 9.9±0.90b |
N80 | 62.4±1.49a | 37.6±1.49a | 19.2±0.53b | 80.8±0.53a | 14.6±0.38b | 69.3±0.29b | 16.1±0.66a | |
N160 | 62.6±0.79a | 37.5±0.79a | 18.6±1.05b | 81.4±1.05a | 15.1±0.04ab | 70.0±0.82b | 14.8±0.82a | |
N240 | 61.0±0.52a | 39.4±0.52a | 18.3±0.39b | 81.7±0.39a | 16.0±0.47a | 70.1±2.14b | 13.9±1.67a | |
N320 | 59.4±1.63a | 41.0±1.63a | 23.4±0.93a | 76.6±0.93b | 15.0±0.25ab | 69.3±0.59b | 15.7±0.84a | |
2020 | N0 | 68.4±1.85a | 31.6±1.85a | 14.0±0.73a | 86.3±0.73a | 20.0±0.32a | 71.0±0.69a | 9.1±1.01a |
N80 | 68.7±3.19a | 31.3±3.19a | 16.4±2.78a | 83.6±2.78a | 16.6±1.38ab | 72.6±3.25a | 10.7±1.93a | |
N160 | 68.9±1.26a | 31.1±1.26a | 15.1±2.50a | 84.9±2.50a | 15.9±2.24ab | 74.2±1.58a | 9.9±0.90a | |
N240 | 71.8±3.42a | 29.2±3.42a | 15.4±1.41a | 84.6±1.41a | 15.9±0.56ab | 74.6±0.93a | 9.5±1.48a | |
N320 | 68.4±3.26a | 31.6±3.26a | 15.0±1.08a | 85.0±1.08a | 13.6±0.52b | 76.5±0.73a | 10.0±1.22a |
年份 Year | 处理 Treatments | 生育期内降水量 Precipitation in the growth period (mm) | 0~200 cm土层土壤储水量 Soil water storage in the 0-200 cm soil layer (mm) | 耗水量 Water consumption (mm) | 耗水强度 Water consumption rate (mm·d-1) | ||
---|---|---|---|---|---|---|---|
播前Pre-sowing | 收获Harvest | 差值Difference | |||||
2019 | N0 | 590.1 | 434.6 | 520.4±10.9a | 85.8 | 504.3±10.9a | 3.0±0.06a |
N80 | 590.1 | 434.6 | 513.3±15.8a | 78.7 | 511.4±15.8a | 3.0±0.09a | |
N160 | 590.1 | 434.6 | 500.0±24.3a | 65.4 | 521.6±24.3a | 3.1±0.14a | |
N240 | 590.1 | 434.6 | 494.0±24.8a | 59.4 | 530.7±24.8a | 3.1±0.15a | |
N320 | 590.1 | 434.6 | 507.0±15.4a | 72.4 | 517.7±15.4a | 3.1±0.09a | |
2020 | N0 | 472.1 | 517.9 | 506.6±7.4a | -11.3 | 483.4±7.4b | 3.1±0.05b |
N80 | 472.1 | 517.9 | 484.2±1.1b | -33.7 | 505.8±1.1a | 3.3±0.01a | |
N160 | 472.1 | 517.9 | 495.7±3.4ab | -22.2 | 494.3±3.4ab | 3.2±0.02ab | |
N240 | 472.1 | 517.9 | 494.8±5.7ab | -23.1 | 495.2±5.7ab | 3.2±0.04ab | |
N320 | 472.1 | 517.9 | 487.9±4.2b | -30.0 | 502.1±4.2a | 3.3±0.03a |
Table 2 Effects of different nitrogen treatments on water consumption and water consumption rate of forage sorghum in 2019 and 2020
年份 Year | 处理 Treatments | 生育期内降水量 Precipitation in the growth period (mm) | 0~200 cm土层土壤储水量 Soil water storage in the 0-200 cm soil layer (mm) | 耗水量 Water consumption (mm) | 耗水强度 Water consumption rate (mm·d-1) | ||
---|---|---|---|---|---|---|---|
播前Pre-sowing | 收获Harvest | 差值Difference | |||||
2019 | N0 | 590.1 | 434.6 | 520.4±10.9a | 85.8 | 504.3±10.9a | 3.0±0.06a |
N80 | 590.1 | 434.6 | 513.3±15.8a | 78.7 | 511.4±15.8a | 3.0±0.09a | |
N160 | 590.1 | 434.6 | 500.0±24.3a | 65.4 | 521.6±24.3a | 3.1±0.14a | |
N240 | 590.1 | 434.6 | 494.0±24.8a | 59.4 | 530.7±24.8a | 3.1±0.15a | |
N320 | 590.1 | 434.6 | 507.0±15.4a | 72.4 | 517.7±15.4a | 3.1±0.09a | |
2020 | N0 | 472.1 | 517.9 | 506.6±7.4a | -11.3 | 483.4±7.4b | 3.1±0.05b |
N80 | 472.1 | 517.9 | 484.2±1.1b | -33.7 | 505.8±1.1a | 3.3±0.01a | |
N160 | 472.1 | 517.9 | 495.7±3.4ab | -22.2 | 494.3±3.4ab | 3.2±0.02ab | |
N240 | 472.1 | 517.9 | 494.8±5.7ab | -23.1 | 495.2±5.7ab | 3.2±0.04ab | |
N320 | 472.1 | 517.9 | 487.9±4.2b | -30.0 | 502.1±4.2a | 3.3±0.03a |
Fig.5 Relationships of two-year averages of dry matter yield and water use efficiency of forage sorghum with nitrogen application rate in 2019 and 2020
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