播种方式与种植密度互作对大穗型小麦品种产量和氮素利用率的调控效应

郑飞娜,初金鹏,张秀,费立伟,代兴龙,贺明荣

Interactive effects of sowing pattern and planting density on grain yield and nitrogen use efficiency in large spike wheat cultivar

Fei-Na ZHENG,Jin-Peng CHU,Xiu ZHANG,Li-Wei FEI,Xing-Long DAI,Ming-Rong HE

表1 2015-2016 和2016-2017 生育季冬小麦播前0~0.20 m和0.20~0.40m土层基础地力

Table 1 Nutrient status of top 0-0.20 m and 0.20-0.40 m soil before seeding in 2015-2016 and 2016-2017

年份 Year 土层 Soil layer (m) 容重 Bulk density (g cm-3) 有机质 Organic matter (g kg-1) 全氮 Total N (g kg-1) 碱解氮 Alkali-hydrolysable N (mg kg-1) 速效磷 Available P (mg kg-1) 速效钾 Available K (mg kg-1) 2015-2016 0-0.20 1.33 14.67 1.15 77.98 30.84 90.31 0.20-0.40 1.35 12.25 0.83 33.70 6.63 60.29 2016-2017 0-0.20 1.32 16.98 1.23 60.20 31.24 80.18 0.20-0.40 1.35 13.25 0.90 48.10 6.95 47.62