渭北旱塬豆科绿肥提高冬小麦籽粒锌的效应与影响因素研究

刘苡轩,黄冬琳,刘娜,姚致远,尹丹,蒙元永,赵护兵,高亚军,王朝辉

The Increasing Effect and Influencing Factors of Leguminous Green Manure on Wheat Grain Zn in Weibei Highland

YiXuan LIU,DongLin HUANG,Na LIU,ZhiYuan YAO,Dan YIN,YuanYong MENG,HuBing ZHAO,YaYun GAO,ZhaoHui WANG

表1 土壤基础理化性状

Table 1 Physical and chemical properties of tested soils (0-20 cm)

地点 Site 有机质 Organic matter (g·kg-1) 全氮 Total N (g·kg-1) 有效磷 Olsen-P (mg·kg-1) 速效钾 Available K (mg·kg-1) 矿质氮Inorganic nitrogen DTPA-Zn (mg·kg-1) pH NO3--N (mg·kg-1) NH4+-N (mg·kg-1) 永寿县Yongshou 12.92 0.82 11.2 134.0 11.9 4.75 0.44 8.5 长武县Changwu 11.80 0.77 4.5 131.9 13.1 2.55 0.33 8.1