Acta Prataculturae Sinica ›› 2023, Vol. 32 ›› Issue (3): 80-90.DOI: 10.11686/cyxb2022279
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Tong-yao LI1,2(), Qing-ping ZHOU1,2, You-jun CHEN1,2, Yuan ZHAN1,2, Hui WANG1,2()
Received:
2022-06-28
Revised:
2022-08-31
Online:
2023-03-20
Published:
2022-12-30
Contact:
Hui WANG
Tong-yao LI, Qing-ping ZHOU, You-jun CHEN, Yuan ZHAN, Hui WANG. Effects of nitrogen application rate on seed yield and nitrogen use efficiency of Elymus[J]. Acta Prataculturae Sinica, 2023, 32(3): 80-90.
取样时间 Sampling time | 施氮水平 Nitrogen application | 同德短芒披碱草E. breviaristatus cv. Tongde | 青牧1号老芒麦E. sibiricus cv. Qingmu No. 1 | ||||
---|---|---|---|---|---|---|---|
株高 Plant height (cm) | 分蘖数 Tillers (No.·m-2) | 营养枝占比 Proportion of vegetative tillers (%) | 株高 Plant height (cm) | 分蘖数 Tillers (No.·m-2) | 营养枝占比 Proportion of vegetative tillers (%) | ||
S1 | N0 | 50.30a | 805b | 41b | 50.23a | 812a | 62ab |
N1 | 51.77a | 1279ab | 55ab | 51.00a | 985a | 74a | |
N2 | 51.87a | 1193ab | 62ab | 54.40a | 1187a | 63ab | |
N3 | 61.37a | 1211ab | 53ab | 47.70a | 1069a | 58ab | |
N4 | 53.87a | 1824a | 69a | 47.70a | 1032a | 63ab | |
N5 | 58.23a | 1795a | 66a | 53.33a | 1020a | 45b | |
S2 | N0 | 65.57ab | 1227b | 43a | 62.27b | 997c | 48a |
N1 | 81.10a | 1569ab | 52a | 76.23ab | 1204bc | 63a | |
N2 | 71.17ab | 1761ab | 59a | 75.37ab | 1685abc | 61a | |
N3 | 74.93ab | 1659ab | 58a | 78.90a | 2336a | 65a | |
N4 | 74.10ab | 1956a | 55a | 87.43a | 2170ab | 61a | |
N5 | 60.47b | 1973a | 62a | 81.20a | 2040ab | 49a | |
S3 | N0 | 85.27b | 1031c | 28c | 86.17c | 921b | 45a |
N1 | 104.03a | 1727b | 53b | 92.57bc | 1377ab | 58a | |
N2 | 103.53a | 2323a | 64ab | 103.27ab | 1957ab | 62a | |
N3 | 103.93a | 2471a | 68a | 104.80ab | 2209ab | 66a | |
N4 | 104.50a | 2043ab | 58ab | 112.13a | 2101ab | 58a | |
N5 | 112.77a | 2259a | 52b | 109.43a | 2352a | 52a | |
S4 | N0 | 88.43b | 933b | 32b | 90.50c | 925b | 40b |
N1 | 103.43a | 1807a | 50a | 100.43bc | 1816a | 65a | |
N2 | 106.00a | 1864a | 60a | 110.30ab | 1719a | 61a | |
N3 | 112.03a | 2031a | 54a | 110.87ab | 1861a | 59ab | |
N4 | 113.53a | 1993a | 48ab | 119.87a | 2043a | 55ab | |
N5 | 112.77a | 1704a | 50a | 117.87a | 1912a | 51ab |
Table 1 Effects of nitrogen application on the plant height and the tiller number per square meter of two cultivars
取样时间 Sampling time | 施氮水平 Nitrogen application | 同德短芒披碱草E. breviaristatus cv. Tongde | 青牧1号老芒麦E. sibiricus cv. Qingmu No. 1 | ||||
---|---|---|---|---|---|---|---|
株高 Plant height (cm) | 分蘖数 Tillers (No.·m-2) | 营养枝占比 Proportion of vegetative tillers (%) | 株高 Plant height (cm) | 分蘖数 Tillers (No.·m-2) | 营养枝占比 Proportion of vegetative tillers (%) | ||
S1 | N0 | 50.30a | 805b | 41b | 50.23a | 812a | 62ab |
N1 | 51.77a | 1279ab | 55ab | 51.00a | 985a | 74a | |
N2 | 51.87a | 1193ab | 62ab | 54.40a | 1187a | 63ab | |
N3 | 61.37a | 1211ab | 53ab | 47.70a | 1069a | 58ab | |
N4 | 53.87a | 1824a | 69a | 47.70a | 1032a | 63ab | |
N5 | 58.23a | 1795a | 66a | 53.33a | 1020a | 45b | |
S2 | N0 | 65.57ab | 1227b | 43a | 62.27b | 997c | 48a |
N1 | 81.10a | 1569ab | 52a | 76.23ab | 1204bc | 63a | |
N2 | 71.17ab | 1761ab | 59a | 75.37ab | 1685abc | 61a | |
N3 | 74.93ab | 1659ab | 58a | 78.90a | 2336a | 65a | |
N4 | 74.10ab | 1956a | 55a | 87.43a | 2170ab | 61a | |
N5 | 60.47b | 1973a | 62a | 81.20a | 2040ab | 49a | |
S3 | N0 | 85.27b | 1031c | 28c | 86.17c | 921b | 45a |
N1 | 104.03a | 1727b | 53b | 92.57bc | 1377ab | 58a | |
N2 | 103.53a | 2323a | 64ab | 103.27ab | 1957ab | 62a | |
N3 | 103.93a | 2471a | 68a | 104.80ab | 2209ab | 66a | |
N4 | 104.50a | 2043ab | 58ab | 112.13a | 2101ab | 58a | |
N5 | 112.77a | 2259a | 52b | 109.43a | 2352a | 52a | |
S4 | N0 | 88.43b | 933b | 32b | 90.50c | 925b | 40b |
N1 | 103.43a | 1807a | 50a | 100.43bc | 1816a | 65a | |
N2 | 106.00a | 1864a | 60a | 110.30ab | 1719a | 61a | |
N3 | 112.03a | 2031a | 54a | 110.87ab | 1861a | 59ab | |
N4 | 113.53a | 1993a | 48ab | 119.87a | 2043a | 55ab | |
N5 | 112.77a | 1704a | 50a | 117.87a | 1912a | 51ab |
品种 Cultivars | 施氮水平 Nitrogen application | 穗长 Ear length (cm) | 每穗小穗数 Spikelets per ear (No.) | 每穗种子数 Seeds per ear (No.) | 每小穗种子数 Seeds per spikelet (No.) | 千粒重 1000-seed weight (g) | 种子产量 Seed yield (kg·hm-2) | 收获指数 Harvest index |
---|---|---|---|---|---|---|---|---|
同德短芒披碱草 E. breviaristatus cv. Tongde | N0 | 12.85a | 28.22b | 80.07b | 2.87a | 0.4708b | 712c | 0.1800ab |
N1 | 14.51a | 30.74ab | 88.66ab | 3.02a | 0.5497a | 1211ab | 0.2408a | |
N2 | 14.17a | 31.27ab | 96.65ab | 3.22a | 0.5053ab | 1198ab | 0.2067ab | |
N3 | 14.72a | 31.18ab | 94.85ab | 3.02a | 0.5740a | 1179bc | 0.1700b | |
N4 | 15.10a | 35.35a | 103.40a | 3.00a | 0.5704a | 1623ab | 0.2000ab | |
N5 | 14.53a | 32.29ab | 95.20ab | 2.96a | 0.5499a | 1661a | 0.1833ab | |
青牧1号老芒麦 E. sibiricus cv. Qingmu No. 1 | N0 | 15.22b | 33.69b | 101.78c | 3.11a | 0.4217b | 717b | 0.2200ab |
N1 | 16.50ab | 41.58a | 120.00ab | 3.11a | 0.5284a | 701b | 0.1600c | |
N2 | 18.92a | 39.71ab | 124.24ab | 3.45a | 0.4273b | 1168ab | 0.2067abc | |
N3 | 16.66ab | 39.05ab | 131.87a | 3.47a | 0.4509ab | 1607a | 0.2400a | |
N4 | 17.27ab | 38.33ab | 127.93ab | 3.33a | 0.4576ab | 1626a | 0.1900bc | |
N5 | 16.62ab | 29.29b | 113.82bc | 3.02a | 0.3961b | 1575a | 0.1967abc |
Table 2 Effects of nitrogen application on seed yield and yield components of two Elymus cultivars
品种 Cultivars | 施氮水平 Nitrogen application | 穗长 Ear length (cm) | 每穗小穗数 Spikelets per ear (No.) | 每穗种子数 Seeds per ear (No.) | 每小穗种子数 Seeds per spikelet (No.) | 千粒重 1000-seed weight (g) | 种子产量 Seed yield (kg·hm-2) | 收获指数 Harvest index |
---|---|---|---|---|---|---|---|---|
同德短芒披碱草 E. breviaristatus cv. Tongde | N0 | 12.85a | 28.22b | 80.07b | 2.87a | 0.4708b | 712c | 0.1800ab |
N1 | 14.51a | 30.74ab | 88.66ab | 3.02a | 0.5497a | 1211ab | 0.2408a | |
N2 | 14.17a | 31.27ab | 96.65ab | 3.22a | 0.5053ab | 1198ab | 0.2067ab | |
N3 | 14.72a | 31.18ab | 94.85ab | 3.02a | 0.5740a | 1179bc | 0.1700b | |
N4 | 15.10a | 35.35a | 103.40a | 3.00a | 0.5704a | 1623ab | 0.2000ab | |
N5 | 14.53a | 32.29ab | 95.20ab | 2.96a | 0.5499a | 1661a | 0.1833ab | |
青牧1号老芒麦 E. sibiricus cv. Qingmu No. 1 | N0 | 15.22b | 33.69b | 101.78c | 3.11a | 0.4217b | 717b | 0.2200ab |
N1 | 16.50ab | 41.58a | 120.00ab | 3.11a | 0.5284a | 701b | 0.1600c | |
N2 | 18.92a | 39.71ab | 124.24ab | 3.45a | 0.4273b | 1168ab | 0.2067abc | |
N3 | 16.66ab | 39.05ab | 131.87a | 3.47a | 0.4509ab | 1607a | 0.2400a | |
N4 | 17.27ab | 38.33ab | 127.93ab | 3.33a | 0.4576ab | 1626a | 0.1900bc | |
N5 | 16.62ab | 29.29b | 113.82bc | 3.02a | 0.3961b | 1575a | 0.1967abc |
系数 Coefficient | 品种 Cultivars | 单位面积生殖枝数 Fertile tillers per square meter | 穗长 Ear length | 每小穗种子数Seeds per spikelet | 每穗小穗数 Spikelets per ear | 每穗种子数Seeds per ear | 千粒重 1000-seed weight |
---|---|---|---|---|---|---|---|
相关系数Correlation coefficient | 同德短芒披碱草E. breviaristatus cv. Tongde | 0.59* | 0.52* | 0.19 | 0.63** | 0.64** | 0.34 |
青牧1号老芒麦E. sibiricus cv. Qingmu No. 1 | 0.53* | 0.33 | 0.41 | 0.18 | 0.58* | -0.20 | |
通径系数Pathway coefficient | 同德短芒披碱草E. breviaristatus cv. Tongde | 0.42* | -0.16 | -0.11 | 0.01 | 0.67* | -0.05 |
青牧1号老芒麦E. sibiricus cv. Qingmu No. 1 | 0.42* | -0.02 | -0.09 | -0.04 | 0.66* | -0.31 |
Table 3 Correlation coefficients and pathway coefficient between seed yield components and seed yield
系数 Coefficient | 品种 Cultivars | 单位面积生殖枝数 Fertile tillers per square meter | 穗长 Ear length | 每小穗种子数Seeds per spikelet | 每穗小穗数 Spikelets per ear | 每穗种子数Seeds per ear | 千粒重 1000-seed weight |
---|---|---|---|---|---|---|---|
相关系数Correlation coefficient | 同德短芒披碱草E. breviaristatus cv. Tongde | 0.59* | 0.52* | 0.19 | 0.63** | 0.64** | 0.34 |
青牧1号老芒麦E. sibiricus cv. Qingmu No. 1 | 0.53* | 0.33 | 0.41 | 0.18 | 0.58* | -0.20 | |
通径系数Pathway coefficient | 同德短芒披碱草E. breviaristatus cv. Tongde | 0.42* | -0.16 | -0.11 | 0.01 | 0.67* | -0.05 |
青牧1号老芒麦E. sibiricus cv. Qingmu No. 1 | 0.42* | -0.02 | -0.09 | -0.04 | 0.66* | -0.31 |
施氮水平 Nitrogen application | 同德短芒披碱草E. breviaristatus cv. Tongde | 青牧1号老芒麦E. sibiricus cv. Qingmu No. 1 | ||
---|---|---|---|---|
氮肥农学利用率 Nitrogen agronomic utilization efficiency | 氮肥偏生产力 Nitrogen partial productivity | 氮肥农学利用率 Nitrogen agronomic utilization efficiency | 氮肥偏生产力 Nitrogen partial productivity | |
N1 | 11.08a | 26.90a | -0.36b | 15.58a |
N2 | 5.33b | 13.31b | 5.01a | 12.98ab |
N3 | 3.46b | 8.73bc | 6.60a | 11.91abc |
N4 | 5.06b | 9.02bc | 5.05a | 9.03bc |
N5 | 4.22b | 7.38c | 3.81ab | 7.00c |
Table 4 Effect of nitrogen on agronomic utilization efficiency and partial productivity of two cultivars (kg·kg-1)
施氮水平 Nitrogen application | 同德短芒披碱草E. breviaristatus cv. Tongde | 青牧1号老芒麦E. sibiricus cv. Qingmu No. 1 | ||
---|---|---|---|---|
氮肥农学利用率 Nitrogen agronomic utilization efficiency | 氮肥偏生产力 Nitrogen partial productivity | 氮肥农学利用率 Nitrogen agronomic utilization efficiency | 氮肥偏生产力 Nitrogen partial productivity | |
N1 | 11.08a | 26.90a | -0.36b | 15.58a |
N2 | 5.33b | 13.31b | 5.01a | 12.98ab |
N3 | 3.46b | 8.73bc | 6.60a | 11.91abc |
N4 | 5.06b | 9.02bc | 5.05a | 9.03bc |
N5 | 4.22b | 7.38c | 3.81ab | 7.00c |
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