Relationship Between the N Concentration of the Leaf Subtending Boll and the Cotton Fiber Quality
文献类型: 外文期刊
作者: Wang You-hua 1 ; Zhao Xin-hua 1 ; Chen Bing-lin 1 ; Gao Xiang-bin 1 ; Zhou Zhi-guo 1 ;
作者机构: 1.College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China
2.College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China;Cotton Research Institute, Chinese Academy of Agricultural Sciences, Anyang 2633206, P.R.China
关键词: cotton;fiber quality;leaf N concentration;cellulose
期刊名称:JOURNAL OF INTEGRATIVE AGRICULTURE ( 影响因子:2.848; 五年影响因子:2.979 )
ISSN: 2095-3119
年卷期: 2012 年 11 卷 12 期
页码:
收录情况: SCI
摘要: This experiments were conducted in Nanjing (118 degrees 50'E, 32 degrees 02'N) and Xuzhou (117 degrees 11'E, 34 degrees 15'N), Jiangsu Province, China, to study the response of fiber quality to the N concentration of the leaf subtending boll in cotton (Gossypium hirsutum L.). Results suggested that the N dilution curve of the leaf subtending boll can accurately indicate the stage-specific plant N status for fiber development. Fiber strength is likely to be the most variable fiber quality index responding to the leaf N variation which is different in cultivars. Fiber length was the most stable index among strength, length, micronaire, and elongation. There existed an optimum leaf N concentration for fiber strength development in each stage. The optimum leaf N regression curve was very close to the N dilution curve in the middle positional fruiting branches under the 240 kg N ha(-1) soil N application rate.
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