| In order to study the differences of plant growth traits and nitrogen production efficiency in different winter wheat varieties, the experiment about Chinese Spring-Substitution lines in wheat and the materials was carried out at the experimental station of Hebei Agricultural University in 2008要2009. The experiment containing nitrogen supplication and non supply nitrogen supplication in spring was conducted by split-plot design. Under different N-condition, the study analyzed the plant growth traits including the dry mass per plant, the accumulative N amount per plant and nitrogen content. The resutts showed that the effect of N level was directly and significant on yield performance as well as the accumulative N amount per plant. 4A could be the high N-efficiency variety under nitrogen supplication or high nitrogen level and was more sensitive to the low-N condition. |
