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3 种植密度和施氮量对棉花干物质分配的影响
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Table 3 Effects of nitrogen application and planting density on dry matter distribution of 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 plant hm-2) | | D5.25 | 5008.6 c (44.6) | 6184.5 c (55.4) | | 4842.2 c (43.3) | 6317.8 c (56.7) | | D6.75 | 6259.7 b (47.5) | 6902.1 b (52.5) | | 5713.9 b (45.4) | 6847.5 b (54.6) | | D8.25 | 7114.0 a (49.3) | 7286.1 a (50.7) | | 6406.1 a (47.4) | 7082.7 a (52.6) | | 施氮量N rate (kg hm-2) | | N0 | 5365.9 d (45.2) | 6473.0 b (54.8) | | 4910.9 d (43.6) | 6319.7 b (56.4) | | N105 | 5788.7 c (46.5) | 6581.1 b (53.5) | | 5155.9 c (44.1) | 6483.0 b (55.9) | | N210 | 6205.8 b (46.8) | 6944.8 a (53.2) | | 5855.4 b (45.8) | 6892.7 a (54.2) | | N315 | 6462.8 b (47.7) | 7002.0 a (52.3) | | 5987.6 b (46.1) | 6956.9 a (53.9) | | N420 | 6813.9 a (49.4) | 6953.6 a (50.6) | | 6360.7 a (47.2) | 7094.4 a (52.8) | | 种植密度×施氮量Plant density × N rate | | D5.25×N0 | 4725.7 g (43.4) | 6155.9 d (56.6) | | 4326.7 f (41.3) | 6142.7 d (58.7) | | D5.25×N105 | 4633.6 g (42.8) | 6176.8 d (57.2) | | 4297.0 f (41.2) | 6139.7 d (58.8) | | D5.25×N210 | 4742.6 g (43.2) | 6234.7 d (56.8) | | 5005.7 e (44.0) | 6381.0 d (56.0) | | D5.25×N315 | 5126.6 fg (45.3) | 6160.1 d (54.7) | | 5048.0 e (44.1) | 6406.7 d (55.9) | | D5.25×N420 | 5814.8 e (48.5) | 6195.2 d (51.5) | | 5534.0 cd (45.9) | 6519.0 cd (54.1) | | D6.75×N0 | 5455.1 ef (45.2) | 6606.5 c (54.8) | | 4876.7 e (43.8) | 6263.7 d (56.2) | | D6.75×N105 | 5832.6 e (47.3) | 6497.9 cd (52.7) | | 5202.0 de (44.6) | 6459.0 cd (55.4) | | D6.75×N210 | 6432.6 cd (47.5) | 7091.3 b (52.5) | | 5908.0 bc (45.7) | 7032.7 ab (54.3) | | D6.75×N315 | 6753.8 c (48.1) | 7289.7 ab (51.9) | | 5990.0 b (45.6) | 7133.0 ab (54.4) | | D6.75×N420 | 6824.5 c (49.3) | 7025.2 b (50.7) | | 6593.0 a (47.3) | 7349.3 a (52.7) | | D8.25×N0 | 5917.1 de (47.1) | 6656.7 c (52.9) | | 5529.3 cd (45.8) | 6552.7 cd (54.2) | | D8.25×N105 | 6900.1 bc (49.4) | 7068.7 b (50.6) | | 5968.7 b (46.6) | 6850.3 bc (53.4) | | D8.25×N210 | 7442.1 ab (49.8) | 7508.3 a (50.2) | | 6652.7 a (47.8) | 7264.3 ab (52.2) | | D8.25×N315 | 7508.0 a (49.8) | 7556.3 a (50.2) | | 6924.7 a (48.6) | 7331.0 a (51.4) | | D8.25×N420 | 7802.5 a (50.5) | 7640.4 a (49.5) | | 6955.0 a (48.4) | 7415.0 a (51.6) | | 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 | ns |
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