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Peanut yield,nutrient uptake and nutrient requirements in different regions of China
Authors:ZHAO Shi-cheng  L&#  Ji-long  XU Xin-peng  LIN Xiao-mao  Luiz Moro ROSSO  QIU Shao-jun  Ignacio CIAMPITTI  HE Ping
Affiliation:1 Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China2 Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA
Abstract:Nutrient balance is essential for attaining high yield and improving profits in agricultural farming systems, and crop nutrient uptake ratio and stoichiometry can indicate crop nutrient limitations in the field. We collected a large amount of field data to study the variations in yield, nutrient uptake and nutrient stoichiometry of peanut (Arachis hypogaea L.) in Southeast China (SEC), North-central China (NCC), and Northeast China (NEC), during 1993 to 2018. Peanut pod yield gradually increased from 1993 to 2018, with average yields of 4 148, 5 138, and 4 635 kg ha−1 in SEC, NCC, and NEC, respectively. The nitrogen (N) internal efficiency (NIE, yield to N uptake ratio) was similar among the three regions, but phosphorus (P) IE (PIE, yield to P uptake ratio) changed from low to high among regions: NCC
Keywords:peanut  pod yield  nutrient internal efficiency  nutrient stoichiometry  harvest index
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