On variations in the growth/development stages of winter wheat and their response to climate

Guoqiang Zhao; Huailiang Chen; Xuefen Zhang; Weichang Liu; Shitao Wang

doi:10.1117/12.616656

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1 September 2005 On variations in the growth/development stages of winter wheat and their response to climate

Guoqiang Zhao, Huailiang Chen, Xuefen Zhang, Weichang Liu, Shitao Wang

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Proceedings Volume 5884, Remote Sensing and Modeling of Ecosystems for Sustainability II; 58841K (2005) https://doi.org/10.1117/12.616656
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Using data from Zhengzhou the Excel-made time-dependent variations in the growth and development (G/D) stages of winter wheat in 1981-2002 are investigated, with analysis done of the curves. Also, the trends of G/D variations over the years are dealt with by use of the related tendency rates of the appearing dates of all the G/D stages of the crop. Results show that the dates of pre-winter G/D stages depend mainly on the seeding date and the overwhelming majority of the G/D stages shift to an earlier date in the vegetative growth period. A statistical expression is constructed by utilizing the 1981-2002 data of the number of days of the G/D stages and corresponding mean temperatures, with which to explain the variation of the G/D stages of winter wheat.

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Guoqiang Zhao, Huailiang Chen, Xuefen Zhang, Weichang Liu, and Shitao Wang "On variations in the growth/development stages of winter wheat and their response to climate", Proc. SPIE 5884, Remote Sensing and Modeling of Ecosystems for Sustainability II, 58841K (1 September 2005); https://doi.org/10.1117/12.616656

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