基于产量和养分含量的旱地小麦施磷量和土壤有效磷优化

马清霞,王朝辉,惠晓丽,张翔,张悦悦,侯赛宾,黄宁,罗来超,张世君,党海燕

Optimization of Phosphorus Rate and Soil Available Phosphorus Based on Grain Yield and Nutrient Contents in Dryland Wheat Production

MA QingXia,WANG ZhaoHui,HUI XiaoLi,ZHANG Xiang,ZHANG YueYue,HOU SaiBin,HUANG Ning,LUO LaiChao,ZHANG ShiJun,DANG HaiYan

表2 施磷量对小麦穗数、穗粒数和千粒重的影响

Table 2 Effects of P rates on spike number, kernels per spike and 1000-grain mass

年份 Year 磷用量 P2O5 rates (kg·hm-2) 穗数 Spike number (×104 ·hm-2) 穗粒数 Kernels per spike 千粒重 1000-grain mass (g) 2015 0 416d 30b 39.8a 50 565c 32ab 37.0b 100 622b 35a 32.6c 150 709a 32ab 32.0c 200 684a 32ab 31.9c 2016 0 216c 33b 40.0a 50 370b 34ab 40.4a 100 393ab 37a 40.4a 150 429ab 35ab 39.0a 200 436a 36ab 39.0a 2017 0 307c 31b 35.6ab 50 411b 35a 36.6a 100 528a 31b 36.0ab 150 497a 32ab 33.8b 200 532a 32ab 33.6b 年度均值Annual average 2015 599A 35A 39.8A 2016 455B 32A 35.1B 2017 369C 32A 34.6B 处理均值 Treatment average 0 313c 31b 38.5a 50 449b 34a 38.0ab 100 514a 34a 36.3bc 150 545a 33ab 34.9c 200 551a 33ab 34.8c 变异来源 Source of variance（F值） 年度 Year (Y) 31.1** 3.7 36.6** 处理 Treatment (T) 41.4** 1.7 8.0** 年度×处理Y×T 1.1 1.2 3.0*