Peanut yield,nutrient uptake and nutrient requirements in different regions of China  

作　　者：ZHAO Shi-cheng LÜJi-long XU Xin-peng LIN Xiao-mao Luiz Moro ROSSO QIU Shao-jun Ignacio CIAMPITTI HE Ping 

机构地区：[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

出　　处：《Journal of Integrative Agriculture》2021年第9期2502-2511,共10页农业科学学报（英文版）

基　　金：supported by the National Key Research and Development Program of China(2018YFD0201001 and 2016YFD0200102);the Kansas Agricultural Experiment Station,USA(21-079-J)。

摘　　要：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 4148,5138,and 4635 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<SEC<NEC,while potassium(K)IE(KIE,yield to K uptake ratio)portrayed a different pattern of SEC<NCC<NEC.Based on the nutrient IE,to produce 1 Mg of pod yield,the average N,P,and K requirements of the above-ground parts of peanut were roughly 47.2,5.1,and 25.5 kg in SEC,44.8,5.7,and 20.6 kg in NCC,and 44.6,4.4,and 14.7 kg in NEC,respectively.The N/P ratio changed in the sequence NCC<SEC<NEC,and the N/K ratio was similar in NEC and NCC,but lower in SEC.The N harvest index(HI)and KHI declined with increasing nutrient uptake across all regions under high nutrient uptake.The low PIE and N/P ratios in NCC could be explained by the high P accumulation in stover,and high KIE and N/K ratios in NEC may be attributed to the low soil K supply.The frontier analysis approach provides a practical framework and allows documentation of a decline in nutrient HI as nutrient uptake increases.Lastly,this study reveals the limitation and surplus of nutrients of peanut in different regions of China.

关 键 词：PEANUT pod yield nutrient internal efficiency nutrient stoichiometry harvest index 

分 类 号：S565.2[农业科学—作物学]