黄土高原不同地点小麦籽粒矿质元素的含量差异

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Differences of Main Nutrient Concentration in Wheat Grain Between Typical Locations of the Loess Plateau

WANG Li,WANG ZhaoHui,GUO ZiKang,TAO ZhenKui,ZHENG MingJun,HUANG Ning,GAO ZhiYuan,ZHANG XinXin,HUANG TingMiao

表1 2017年冬小麦播种前供试土壤0—40 cm土层理化性质

Table 1 The test soil physical and chemical properties in 0-40 cm soil layer at the beginning of the experiment in 2017

土层 Soil layer (cm) 地点 Site pH 有机质 Organic matter (g·kg-1) 全氮 Total N (g·kg-1) 硝态氮 NO3- -N (mg·kg-1) 铵态氮 NH4+-N (mg·kg-1) 有效磷 Available P (mg·kg-1) 速效钾 Available K (mg·kg-1) 0-20 永寿Yongshou 8.0b 13.5a 0.8a 8.0a 0.5a 19.4a 140.8a 杨凌Yangling 8.1a 14.1a 0.8a 6.4a 0.2a 3.3b 167.5a 20-40 永寿Yongshou 7.9b 12.1a 0.7a 18.7a 0.5a 13.9a 121.6b 杨凌Yangling 8.2a 9.3b 0.6b 3.9b 0.0b 1.2b 134.8a