1Determining critical values of soil Olsen-P for maize and winter wheat from long-term experiments in China

作者： Tang, Xu; Ma, Yibing; Li, Xiuying; Li, Jumei; Tang, Xu; Hao, Xiying; Huang, Shaomin; Yang, Xueyun; SCI

机构： Chinese Acad Agr Sci, Minist Agr, Key Lab Plant Nutr & Nutrient Cycling, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China; Agr & Agri Food Canada, Lethbridge Res Ctr, Lethbridge, AB T1J 4B1, Canada; Henan Acad Agr Sci, Inst Soil & Fertilizer, Zhengzhou 450002, Henan, Peoples R China; NW A&F Univ, Yangling 712100, Shanxi, Peoples R China;

来源：PLANT AND SOIL

关键词： corn models winter wheat

2Phosphorus efficiency in long-term (15 years) wheat-maize cropping systems with various soil and climate conditions

作者： Tang, Xu; Li, Jumei; Ma, Yibing; Li, Xiuying; Tang, Xu; Hao, Xiying; SCI

机构： Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Minist Agr Key Lab Plant Nutr & Nutrient Cycling, Beijing 100081, Peoples R China; Agr & Agri Food Canada, Lethbridge Res Ctr, Lethbridge, AB T1J 4B1, Canada;

来源：FIELD CROPS RESEARCH