氮素水平对小麦根_冠生长及水分利用效率的影响.pdf

2008, 17(3) : 97- 102 A cta A g r ic ult ur ae B or eali-occ idental is S in ica * 氮素水平对小麦根- 冠生长及水分利用效率的影响 1,2 1 1 3 2* 张绪成 , 郭天文 , 谭雪莲 , 高世铭, 上官周平 ( 1. , 730070; 2. , 712100; 3. , 730070) : , - , (Pn) ( Tr) (Gs) WUE, , / ; / 0. 3 , / WUE ; , PnT r Gs , Tr Pn Gs, WU E , / , - , WUE : ; / ; ; ; + :S512. 1 1 : A : 1004- 1389(2008) 03-0097-06 The Effects of Nitrogen Level on the Root and Shoot Growth and Their Relationship with the Water Use Efficiency in Wheat Plants 1,2 1 1 HANG Xu-cheng , GUO Tian-wen , T AN Xue-lian , 3 2* GAO Sh-i ming and SHANGGUA N hou-ping ( 1. Institute of Dryland Agriculture, Gansu Academy of Agriculture Sciences, Lanzhou Gansu 730070, China; 2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Science, Yangling Shaanxi 712100, China; 3. Gansu Academy of Agricultur e Sciences, Lanzhou Gansu 730070, China) Abstract A solution cultured simulating experiment had been conducted to study the effects of nitro- gen application on the root and shoot growth and water use efficiency of two different drought-resist- ance spring wheat. The results showed that