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1 长期磷用量试验2004年开始和2016年小麦播前0—20 cm土层的基本化学性状

Table 1 Basic chemical properties of the 0-20 cm layer soil at initiation of the long-term phosphorus experiment in 2004 and before wheat sowing in 2016

处理 Treatment pH 有机质 Organic matter (g·kg-1) 全氮 Total N (g·kg-1) 速效磷 Olsen-P (mg·kg-1) 速效钾 NH4OAc-K (mg·kg-1) 矿质氮 Inorganic N (mg·kg-1) NO3--N NH4+-N 2004 8.3 13.8 1.1 15 182.4 5.4 2.4 CK 8.2 14.7 0.9 5 137.4 2.5 0.4 P0 8.2 13.5 0.9 5 127.7 6.2 0.3 P50 8.2 14.4 0.9 8 130.4 5.1 0.7 P100 8.2 15.2 1.0 13 132.8 6.4 0.7 P150 8.1 15.1 1.0 32 127.7 6.5 0.6 P200 8.2 15.0 0.9 36 131.7 7.7 0.7