6Narayan D. Root growth and productivity of wheat cuhivars under different soil moisture condition. International[J].Journal of Ecology and Environmental Science. 1991,17 ( 1 ): 19-26.
6[7]Pablo A. Barbieri, Hernán R. Sainz Rozas, et al. Row spacing effects at different levels of nitrogen availability in maize[J]. Agronomy journal 2000,92:283-288.
7李焕章，北方旱区农业学术讨论会论文选编，1983年
8Goodwin I，Australian New Zealand Wine Industry J，1992年，5卷，131页
9North G B，Am J Bot，1991年，78卷，906页
10Davies W J，Ann Rev Plant Physiol Plant Mol Biol，1991年，42卷，55页
4YAN Su-hong, YANG Zhao-sheng, WAN Jun-juan, LI Tie-zhuang, WANG Hai-feng( Cotton Research Institute, Chinese Academy of Agricultural sciences, Anyang 455112, P.R.China Seed Manager Station of Henan Province, Zhengzhou 450002, P. R . China ,Anyang Soil Fertilization Station,Anyang 455000, P.R. China).Study on the Root Systems for Different Types of Winter Wheat[J].Agricultural Sciences in China,2002,1(8):850-855. 被引量：1
