Peanut yield,nutrient uptake and nutrient requirements in different regions of China |
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| Authors: | ZHAO Shi-cheng L&# Ji-long XU Xin-peng LIN Xiao-mao Luiz Moro ROSSO QIU Shao-jun Ignacio CIAMPITTI HE Ping |
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| Institution: | 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.China
2 Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA |
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| 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
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| Keywords: | peanut pod yield nutrient internal efficiency nutrient stoichiometry harvest index |
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