施氮量和种植密度对海岛棉冠层结构和光合特性的影响

王丽, 张承洁, 胡浩然, 宁丽云, 吴一帆, 郭仁松, 张巨松

Effects of Nitrogen Application Rate and Planting Density on Canopy Structure and Photosynthetic Characteristics of Sea Island Cotton

Wang Li, Zhang Chengjie, Hu Haoran, Ning Liyun, Wu Yifan, Guo Rensong, Zhang Jusong

表4 施氮量和种植密度对海岛棉纤维品质的影响

Table 4 Effects of nitrogen application rate and planting density on fiber quality of sea island cotton

种植密度 Planting density 施氮量 Nitrogen application rate 上半部平均长度 Average length of upper half (mm) 整齐度 Uniformity (%) 断裂比强度 Specific strength at break (CN/tex) 伸长率 Elongation (%) 马克隆值 Micron value 纺织参数 Textile parameters D20 N0 39.27ab 90.07ab 47.90a 7.93a 4.03a 238.00abc N1 39.60ab 90.77ab 48.23a 8.33a 4.30a 238.00abc N2 39.80a 91.30ab 48.57a 8.37a 4.07a 238.67abc N3 40.00a 90.17ab 47.83a 8.77a 4.08a 251.00a D24 N0 37.77ab 89.83ab 44.50ab 7.67a 4.17a 220.33cd N1 39.37ab 90.47ab 46.17ab 7.80a 3.80a 238.00abc N2 39.47ab 91.33ab 46.77ab 8.43a 4.13a 234.67abc N3 39.87a 90.80ab 44.97ab 8.43a 4.20a 229.33bcd D28 N0 37.37b 89.13b 42.67b 8.40a 4.23a 210.67d N1 38.83ab 90.90ab 45.17ab 8.47a 4.30a 227.33cd N2 39.03ab 91.83a 46.63ab 8.37a 4.03a 249.33ab N3 38.93ab 91.60a 44.60ab 8.67a 4.27a 238.00abc 施氮量（N） ** ns * * ns * 种植密度（D） * ns ** ns ns ns 施氮量×种植密度（D×N） ns ns ns ns ns ns