Journal of Integrative Agriculture ›› 2013, Vol. 12 ›› Issue (1): 67-79.DOI: 10.1016/S2095-3119(13)60206-3

• 论文 • 上一篇    下一篇

Modeling Fiber Fineness, Maturity, and Micronaire in Cotton (Gossypium hirsutum L.)

 ZHAO Wen-qing, ZHOU Zhi-guo, MENG Ya-li, CHEN Bing-lin, WANG You-hua   

  1. Key Laboratory of Crop Physiology & Ecology in Southern China, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China
  • 收稿日期:2011-12-26 出版日期:2013-01-01 发布日期:2013-01-24
  • 通讯作者: Correspondence ZHOU Zhi-guo, Tel/Fax: +86-25-84396813, E-mail: giscott@njau.edu.cn
  • 基金资助:

    This work was funded by the National Natural Science Foundation of China (30771277 and 30771279).

Modeling Fiber Fineness, Maturity, and Micronaire in Cotton (Gossypium hirsutum L.)

 ZHAO  Wen-qing, ZHOU  Zhi-guo, MENG  Ya-li, CHEN  Bing-lin, WANG  You-hua   

  1. Key Laboratory of Crop Physiology & Ecology in Southern China, Ministry of Agriculture/College of Agriculture, Nanjing Agricultural University, Nanjing 210095, P.R.China
  • Received:2011-12-26 Online:2013-01-01 Published:2013-01-24
  • Contact: Correspondence ZHOU Zhi-guo, Tel/Fax: +86-25-84396813, E-mail: giscott@njau.edu.cn
  • Supported by:

    This work was funded by the National Natural Science Foundation of China (30771277 and 30771279).

摘要: Crop performance is determined by the combined effects of the genotype of the crop and the environmental conditions of the production system. This study was undertaken to develop a dynamic model for simulating environmental (temperature and solar radiation) and N supply effects on fiber fineness, maturity and micronaire. Three different experiments involving genotypes, sowing dates, and N fertilization rates were conducted to support model development and model evaluation. The growth and development duration of fiber fineness, maturity, and micronaire were scaled by using physiological development time of secondary wall synthesis (PDTSWSP), which was determined based on the constant ratio of SWSP/ BMP. PTP (product of relative thermal effectiveness (RTE) and photosynthetically active radiation (PAR), MJ m-2) and subtending leaf N content per unit area (NA, g m-2) and critical subtending leaf N content per unit area (CNA, g m-2) of cotton boll were calculated or simulated to evaluate effects of temperature and radiation, and N supply. Besides, the interactions among temperature, radiation and N supply were also explained by piecewise function. The overall performance of the model was calibrated and validated with independent data sets from three field experiments with two sowing dates, three or five flowering dates and three or four N fertilization rates for three subsequent years (2005, 2007, and 2009) at three ecological locations. The average RMSE and RE for fiber fineness, maturity, and micronaire predictions were 372 m g-1 and 5.0%, 0.11 m g-1 and 11.4%, 0.3 m g-1 and 12.3%, respectively, indicating a good fit between the simulated and observed data. It appears that the model can give a reliable prediction for fiber fineness, maturity and micronaire formation under various growing conditions.

关键词: simulation model , physiological development , fiber quality , N supply , temperature , radiation

Abstract: Crop performance is determined by the combined effects of the genotype of the crop and the environmental conditions of the production system. This study was undertaken to develop a dynamic model for simulating environmental (temperature and solar radiation) and N supply effects on fiber fineness, maturity and micronaire. Three different experiments involving genotypes, sowing dates, and N fertilization rates were conducted to support model development and model evaluation. The growth and development duration of fiber fineness, maturity, and micronaire were scaled by using physiological development time of secondary wall synthesis (PDTSWSP), which was determined based on the constant ratio of SWSP/ BMP. PTP (product of relative thermal effectiveness (RTE) and photosynthetically active radiation (PAR), MJ m-2) and subtending leaf N content per unit area (NA, g m-2) and critical subtending leaf N content per unit area (CNA, g m-2) of cotton boll were calculated or simulated to evaluate effects of temperature and radiation, and N supply. Besides, the interactions among temperature, radiation and N supply were also explained by piecewise function. The overall performance of the model was calibrated and validated with independent data sets from three field experiments with two sowing dates, three or five flowering dates and three or four N fertilization rates for three subsequent years (2005, 2007, and 2009) at three ecological locations. The average RMSE and RE for fiber fineness, maturity, and micronaire predictions were 372 m g-1 and 5.0%, 0.11 m g-1 and 11.4%, 0.3 m g-1 and 12.3%, respectively, indicating a good fit between the simulated and observed data. It appears that the model can give a reliable prediction for fiber fineness, maturity and micronaire formation under various growing conditions.

Key words: simulation model , physiological development , fiber quality , N supply , temperature , radiation