Share Email Print
cover

Proceedings Paper

Effect of water on yield of winter wheat at different growth phases
Author(s): Ronghua Liu; Shuanghe Shen; Zixi Zhu; Wensong Fang; Youhe Wang; Pengpeng Xu; Likui Shi
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The characteristic of climate in North China is short of precipitation in winter and spring. Insufficient supply of water is a major factor affecting yield of winter wheat. The variation of yield caused by irrigation or drought at different stages is not alike. The relationship between them can be represented with water-yield reaction coefficient. Based on the experiment conducted in 2001 through 2004, yield of winter wheat has a marked positive correlation with precipitation at different stages after winter. The water-yield reaction coefficients increase with crop development, especially in turning green stage. The maximum occurs at head sprouting stage. Then it decreases slightly at milking stage. In order to raise water use efficiency of winter wheat, it is necessary to practice irrigation at elongating and head sprouting stages first and milking stage next.

Paper Details

Date Published: 27 September 2006
PDF: 8 pages
Proc. SPIE 6298, Remote Sensing and Modeling of Ecosystems for Sustainability III, 62981Y (27 September 2006); doi: 10.1117/12.678997
Show Author Affiliations
Ronghua Liu, Nanjing Univ. of Information Science and Technology (China)
Henan Institute of Meteorological Sciences (China)
Shuanghe Shen, Nanjing Univ. of Information Science and Technology (China)
Zixi Zhu, Henan Institute of Meteorological Sciences (China)
Wensong Fang, Henan Institute of Meteorological Sciences (China)
Youhe Wang, Henan Institute of Meteorological Sciences (China)
Pengpeng Xu, Henan Institute of Meteorological Sciences (China)
Likui Shi, Henan Institute of Meteorological Sciences (China)


Published in SPIE Proceedings Vol. 6298:
Remote Sensing and Modeling of Ecosystems for Sustainability III
Wei Gao; Susan L. Ustin, Editor(s)

© SPIE. Terms of Use
Back to Top