增密减氮对棉花干物质和氮素积累分配及产量的影响
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王士红,杨中旭,史加亮,李海涛,宋宪亮,孙学振
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Effects of increasing planting density and decreasing nitrogen rate on dry matter, nitrogen accumulation and distribution, and yield of cotton
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Shi-Hong WANG,Zhong-Xu YANG,Jia-Liang SHI,Hai-Tao LI,Xian-Liang SONG,Xue-Zhen SUN
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表4 种植密度和施氮量对棉花氮素分配的影响
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Table 4 Effects of nitrogen application and planting density on nitrogen distribution in cotton (kg hm-2)
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处理
Treatment | 2016 | | 2017 | 营养器官分配量
DVO | 生殖器官分配量
DRO | 营养器官分配量
DVO | 生殖器官分配量
DRO | | 种植密度Plant density (×104 plants hm-2) | | D5.25 | 96.8 b (44.1) | 122.4 b (55.9) | | 93.0 c (43.7) | 119.7 c (56.3) | | D6.75 | 105.4 a (45.2) | 127.6 a (54.8) | | 100.8 b (44.0) | 127.9 a (56.0) | | D8.25 | 107.3 a (45.4) | 129.1 a (54.6) | | 104.2 a (45.7) | 123.0 b (54.3) | | 施氮量N rate (kg hm-2) | | N0 | 81.7 c (44.6) | 101.6 c (55.4) | | 75.0 e (43.6) | 97.1 d (56.4) | | N105 | 99.3 b (45.3) | 119.7 b (54.7) | | 92.1 d (43.8) | 118.3 c (56.2) | | N210 | 103.3 b (43.3) | 135.0 a (56.7) | | 105.6 c (44.7) | 130.6 b (55.3) | | N315 | 114.2 a (45.0) | 139.2 a (55.0) | | 109.9 b (44.9) | 134.9 a (55.1) | | N420 | 117.4 a (46.2) | 136.2 a (53.8) | | 114.0 a (45.4) | 136.7 a (54.6) | | 种植密度×施氮量Plant density×N rate | | D5.25×N0 | 79.2 g (44.0) | 100.8 f (56.0) | | 73.5 i (43.5) | 95.6 h (56.5) | | D5.25×N105 | 95.6 f (45.7) | 113.4 e (54.3) | | 88.1 h (43.4) | 115.2 g (56.6) | | D5.25×N210 | 94.0 f (41.6) | 131.9 bc (58.4) | | 99.4 fg (43.6) | 128.5 cd (56.4) | | D5.25×N315 | 108.0 cde (44.8) | 132.9 bc (55.2) | | 102.3 def (43.5) | 132.6 bc (56.5) | | D5.25×N420 | 107.0 cde (44.6) | 132.8 bc (55.4) | | 101.6 ef (44.5) | 126.5 cde (55.5) | | D6.75×N0 | 82.4 g (44.4) | 103.2 f (55.6) | | 76.2 i (43.5) | 98.9 h (56.5) | | D6.75×N105 | 103.4 def (46.1) | 121.0 de (53.9) | | 94.4 gh (43.7) | 121.4 efg (56.3) | | D6.75×N210 | 106.6 cde (43.7) | 137.2 ab (56.3) | | 108.3 cde (43.8) | 138.8 ab (56.2) | | D6.75×N315 | 118.7 b (45.6) | 141.4 ab (54.4) | | 110.9 bc (44.4) | 138.9 ab (55.6) | | D6.75×N420 | 116.1 bc (46.2) | 135.0 ab (53.8) | | 114.0 bc (44.6) | 141.4 a (55.4) | | D8.25×N0 | 83.6 g (45.4) | 100.8 f (54.6) | | 75.3 i (43.8) | 96.8 h (56.2) | | D8.25×N105 | 98.9 ef (44.2) | 124.9 cd (55.8) | | 93.8 gh (44.2) | 118.4 fg (55.8) | | D8.25×N210 | 109.2 bcd (44.6) | 136.0 ab (55.4) | | 109.0 cd (46.6) | 124.6 def (53.4) | | D8.25×N315 | 115.8 bc (44.7) | 143.1 a (55.3) | | 116.5 b (46.7) | 133.3 bc (53.3) | | D8.25×N420 | 129.1 a (47.9) | 140.7 ab (52.1) | | 126.4 a (47.1) | 142.1 a (52.9) | | 变异来源 Source of variation | | | | | | | 种植密度Density (D) | ** | * | | ** | ** | | 施氮量Nitrogen (N) | ** | ** | | ** | ** | | 种植密度×施氮量 D×N | ns | ns | | ** | ** |
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