内蒙古地区甜菜临界氮浓度稀释模型的构建及应用

张加康, 李斐, 史树德, 杨海波

Construction and application of the critical nitrogen concentration dilution model of sugar beet in Inner Mongolia, China

ZHANG Jia-Kang, LI Fei, SHI Shu-De, YANG Hai-Bo

图1 两品种甜菜不同氮处理收获时总生物量和总氮浓度变化 大写字母表示甜菜品种KWS1676处理间差异显著(P < 0.05), 小写字母表示甜菜品种KWS9167处理间差异显著(P < 0.05)。N0、N15、N32、N50、N76、N100、N150、N163、N217分别表示施氮量为0、15、32、50、76、100、150、163和217 kg N hm-2。

Fig. 1 Variation of total biomass and total nitrogen concentration of two sugar beet cultivars at harvest stage Uppercase letters indicate significant difference between treatments in sugar beet variety KWS1676 at P < 0.05, and lowercase letters indicate significant difference between treatments in sugar beet variety KWS9167 at P < 0.05. N0, N15, N32, N50, N76, N100, N150, N163, and N217 mean the nitrogen application rates of 0, 15, 32, 50, 76, 100, 150, 163, and 217 kg hm-2, respectively.