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1 不同种植密度和施氮量棉花干物质累积动态特征值
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Table 1 Eigen values of cotton dry matter accumulation dynamics under different nitrogen fertilizer rate and planting density treatments
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处理
Treatment | 2016 | 2017 | Ym
(kg hm-2) | t1
(d) | t2
(d) | tm
(d) | Vm
(kg hm-2 d-1) | T
(d) | Ym
(kg hm-2) | t1
(d) | t2
(d) | tm
(d) | Vm
(kg hm-2 d-1) | T | | (d) | | 种植密度Plant density (×104 plants hm-2) | | D5.25 | 11363.4 | 72.1 | 110.1 | 91.1 | 197.3 | 38.0 | 11390.2 | 67.5 | 108.1 | 87.8 | 184.3 | 40.6 | | D6.75 | 14377.1 | 73.8 | 116.7 | 95.3 | 221.5 | 42.8 | 12545.3 | 66.2 | 106.7 | 86.5 | 203.7 | 40.6 | | D8.25 | 15902.2 | 72.0 | 118.7 | 95.4 | 225.6 | 46.7 | 13935.1 | 66.1 | 111.9 | 89.0 | 200.5 | 45.8 | | 施氮量N rate (kg hm-2) | | N0 | 12925.3 | 73.7 | 117.0 | 95.4 | 195.1 | 43.3 | 10891.9 | 64.6 | 106.3 | 85.5 | 172.0 | 41.7 | | N105 | 13469.8 | 72.8 | 116.2 | 94.5 | 205.7 | 43.3 | 11955.7 | 65.9 | 108.2 | 87.1 | 186.0 | 42.3 | | N210 | 14235.7 | 72.8 | 115.0 | 94.0 | 221.2 | 42.2 | 12996.6 | 66.8 | 109.3 | 88.0 | 201.2 | 42.5 | | N315 | 14595.4 | 72.2 | 114.7 | 93.4 | 225.2 | 42.5 | 13117.0 | 66.9 | 108.4 | 87.7 | 207.9 | 41.5 | | N420 | 14178.2 | 71.6 | 112.7 | 92.2 | 226.7 | 41.1 | 14156.4 | 68.7 | 112.2 | 90.4 | 213.7 | 43.6 | | 种植密度×施氮量Plant density×N rate | | D5.25×N0 | 10330.1 | 72.5 | 110.7 | 91.6 | 178.5 | 38.1 | 10044.1 | 66.2 | 104.7 | 85.5 | 171.8 | 38.5 | | D5.25×N105 | 10976.7 | 72.2 | 110.5 | 91.4 | 189.5 | 38.2 | 10370.4 | 66.0 | 105.5 | 85.7 | 172.6 | 39.5 | | D5.25×N210 | 11632.4 | 72.4 | 109.7 | 91.0 | 205.5 | 37.3 | 11781.5 | 67.7 | 109.0 | 88.3 | 187.5 | 41.3 | | D5.25×N315 | 12084.2 | 71.5 | 110.2 | 90.8 | 206.3 | 38.6 | 11908.0 | 67.9 | 108.8 | 88.4 | 191.4 | 40.9 | | D5.25×N420 | 11793.4 | 71.7 | 109.4 | 90.5 | 206.7 | 37.7 | 12847.2 | 69.7 | 112.3 | 91.0 | 198.1 | 42.6 | | D6.75×N0 | 13856.2 | 75.3 | 120.2 | 97.8 | 202.5 | 44.9 | 10773.0 | 64.0 | 104.7 | 84.4 | 174.7 | 40.7 | | D6.75×N105 | 14109.2 | 74.3 | 119.1 | 96.7 | 207.4 | 44.8 | 11976.6 | 66.2 | 106.1 | 86.2 | 197.7 | 39.9 | | D6.75×N210 | 14215.0 | 73.1 | 115.2 | 94.2 | 222.7 | 42.1 | 12568.9 | 65.6 | 105.1 | 85.4 | 209.5 | 39.5 | | D6.75×N315 | 15082.1 | 73.3 | 115.3 | 94.3 | 236.4 | 42.0 | 13201.8 | 66.8 | 106.9 | 86.9 | 217.0 | 40.1 | | D6.75×N420 | 14623.0 | 73.0 | 113.5 | 93.3 | 238.4 | 40.4 | 14206.0 | 68.1 | 110.7 | 89.4 | 219.4 | 42.6 | | D8.25×N0 | 14589.7 | 73.3 | 120.2 | 96.8 | 204.4 | 47.0 | 11858.7 | 63.7 | 109.6 | 86.7 | 169.6 | 46.0 | | D8.25×N105 | 15323.4 | 72.0 | 118.9 | 95.4 | 220.2 | 46.9 | 13520.2 | 65.6 | 112.9 | 89.3 | 187.7 | 47.4 | | D8.25×N210 | 16859.7 | 73.0 | 120.3 | 96.7 | 235.4 | 47.3 | 14639.3 | 67.1 | 113.7 | 90.4 | 206.5 | 46.7 | | D8.25×N315 | 16619.8 | 71.7 | 118.6 | 95.2 | 233.0 | 47.0 | 14241.1 | 66.0 | 109.6 | 87.8 | 215.3 | 43.6 | | D8.25×N420 | 16118.3 | 70.1 | 115.2 | 92.7 | 235.1 | 45.1 | 15416.1 | 68.2 | 113.7 | 90.9 | 223.6 | 45.5 | | 平均Average | 13880.9 | 72.6 | 115.1 | 93.9 | 214.8 | 42.5 | 12623.5 | 66.6 | 108.9 | 87.8 | 196.2 | 42.3 |
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