北方麦区小麦产量与蛋白质含量变化对土壤硝态氮的响应

马悦,田怡,苑爱静,王浩琳,李永华,黄婷苗,黄宁,李超,党海燕,邱炜红,何刚,王朝辉,石美

Response of Wheat Yield and Protein Concentration to Soil Nitrate in Northern Wheat Production Region of China

MA Yue,TIAN Yi,YUAN AiJing,WANG HaoLin,LI YongHua,HUANG TingMiao,HUANG Ning,LI Chao,DANG HaiYan,QIU WeiHong,HE Gang,WANG ZhaoHui,SHI Mei

表4 北方麦区1 m土层不同土壤硝态氮残留下地上部吸氮量、籽粒吸氮量、氮收获指数

Table 4 N uptake in aboveground part, grain N uptake, and N harvest index of wheat at different nitrate N residue levels in 0-100 cm soil layer in northern wheat production region of China

硝态氮残留 Nitrate N residue (kg·hm^-2)	地上部吸氮量 N uptake in aboveground part (kg·hm^-2)				籽粒吸氮量 Grain N uptake (kg·hm^-2)				氮收获指数 N harvest index (%)
硝态氮残留 Nitrate N residue (kg·hm^-2)	农户施肥FF	监控施肥RF	监控无氮RF-N	平均Average	农户施肥FF	监控施肥RF	监控无氮RF-N	平均Average	农户施肥FF	监控施肥RF	监控无氮RF-N	平均Average
<55	124 a	123 a	81 b	109 C	105 a	103 a	68 b	92 C	84.0 a	85.5 a	83.7 a	83.4 A
55-100	192 a	194 a	164 b	183 A	157 a	160 a	137 b	151 A	83.1 a	83.1 a	83.7 a	83.1 A
100-200	150 a	148 a	134 b	144 BC	113 a	112 a	103 b	110 BC	76.2 a	75.9 a	77.4 a	76.5 A
200-300	166 a	188 a	160 a	171 AB	132 a	146 a	128 a	135 AB	79.4 a	77.0 a	79.8 a	78.7 A
>300	198 a	203 a	163 a	188 A	160 a	159 a	129 a	149 A	81.7 a	79.5 a	80.1 a	80.5 A
平均Average	164 a	168 a	142 b		131 a	133 a	114 b		79.7 a	78.9 a	80.2 a