[1]QI Long-hai,DANG Ting-hui,CHEN Lu.The Water Use Characteristics of Winter Wheat and Response to Fertilization on Dry-land of Loess Plateau[J].Research of Soil and Water Conservation,2009,16(03):105-109.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
16
Number of periods:
2009 03
Page number:
105-109
Column:
Public date:
2009-06-20
- Title:
-
The Water Use Characteristics of Winter Wheat and Response to Fertilization on Dry-land of Loess Plateau
- Author(s):
-
QI Long-hai1,2, DANG Ting-hui1, CHEN Lu3
-
1. Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources, Yangling, Shaanxi 712100, China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
3. College of Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China
-
- Keywords:
-
water use efficiency; fertilization; dry-land; leaf area index(LAI); winter wheat
- CLC:
-
S512.11.062;S512.11.01
- DOI:
-
-
- Abstract:
-
The impact of fertilization on water use efficiency(WUE) of winter wheat on dry-land of Loess Plateau was researched through observing the factors about water use efficiency under different fertilization treatments. The results show that increasing nitrogen application decreased the leaf WUE in prior period of growing periods but increased it in later period and increased the LAI of wheat. There was no obvious impacts on leaf WUE and LAI by increasing the phosphate fertilizer. Increasing nitrogen application significantly increased WUE in level of biomass and yield by increasing biomass and field of wheat and more phosphate fertilizer application increased the biomass and yield but was no significant impacts on WUE in level of biomass and yield. Correlation analysis between biomass, yield, LAI and WUE were significantly correlated because of increasing the LAI of wheat by fertilizing and then increasing the photosynthetic efficiency of population and accumulation of dry matter and increasing the WUE finally.