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Characteristics of Major Chinese Vegetables in Nutrient Uptake and Requirement |
LI Shutian1,AI Chao1,HE Ping1,ZHANG Jiajia1,CUI Rongzong2,WEI Jianlin2,CHUAN Limin3,LI Mingyue4,JIN Chongwei5 |
1Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China;2Institute of Agricultural Resources and Environment,Shandong Academy of Agricultural Sciences,Jinan 250100,Shandong,China;3Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China;4Tianjin Institute of Agricultural Resources and Environment,Tianjin 300192,China;5College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310058,Zhejiang,China |
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Abstract It is of significant importance to study the nutrient requirements of main Chinese vegetables for establishing a new method of recommending vegetables fertilization.Adopting the method of combining information retrieval,field investigation,sampling,measuring;and according to QUEFTS model,this paper analyzed the relation between the yields of open field Chinese cabbage,radish,greenhouse tomato,open field scallion,and their nutrient uptakes;obtained the optimum nutrient uptake curve and estimated the best nutrient requirement amount for producing 1 unit of vegetable yield.Results showed that there were great variations in yield,nutrient uptake amount and nutrient internal efficiency(IE)of 4 kinds vegetables.For Chinese cabbage,the average yield was 84.3 t · hm-2(n = 2 758),above ground N,P and K nutrient accumulation amounts were 176.4,33.6 and 208.4 kg · hm-2,respectively; IE value were 539.32,2 901.6 and 458.23 kg ·kg-1,respectively.The best N,P and K requirements quantities for producing 1 t of Chinese cabbage was 1.96 kg N,0.41 kg P and 2.39 kg K.The average fleshy root yield was 63.5 t · hm-2(n = 2 288).The N,P and K accumulation quantities were 155.4,30.9 and 217.9 kg · hm-2,respectively.The IE value were 455.0,2 328.7 and 361.9 kg · kg-1,respectively. The best N,P and K requirement quantities for producing 1 t of radish fleshy roots were 2.2 kg N,0.4 kg P and 2.6 kg K,respectively.The average facility tomato yield was 85.0 t ·hm-2(n = 703).The N,P and K accumulation amount were 213.5,55.1 and 352.1 kg · hm-2,respectively.The IE value were 458.2,1 941.5,287.9 kg · kg-1,respectively.The best N,P and K requirement quantities for producing 1 t of facility tomato fruits were 2.19 kg N,0.56 kg P,3.36 kg K,respectively.The average economic yield of scallion was 60.4 t · hm-2(n = 976).The N,P and K accumulation quantities were 128.8,18.9 and 117.7 kg · hm-2,respectively.The IE value were 503.7,3 368.7 and 593.3 kg · kg-1,respectively.The best N,P and K requirement quantities for producing 1 t of scallion were 1.92 kg N,0.28 kg P and 1.69 kg K,respectively.
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Received: 08 September 2021
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