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| Effects of Different Topdressing Nitrogen Fertilizer on Quality，Growth，and Nitrogen Use Efficiency of Cherry Tomato in Solar Greenhouse |
| LIU Yuxi1，WANG Juanjuan2，WU Longkai1，LI Yansu1，HE Chaoxing1，YU Xianchang1，WANG Jun1*
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1Institute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences，Beijing 100081，China；2National
Agricultural Technology Extension Service Center，Beijing 100125，China |
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Abstract Aiming at the issue of lacking rational nitrogen fertilizer parameter in producing cherry tomato
under solar greenhouse，this paper carried out studies on the effects of different nitrogen fertilizer topdressing
on the quality and nitrogen use efficiency in Beijing under moderate fertility soil conditions．In this study，
cherry tomato‘Qianxi’and‘Hongyu’were selected as experimental materials．The normal amount of
nitrogen fertilizer was determined according to target yield．Four treatments were set up，described as no
nitrogen topdressing（CK），50% normal nitrogen topdressing（50%N），normal nitrogen opdressing（N），
and 150% normal nitrogen topdressing（150%N），respectively．The results showed that compared with the
CK，nitrogen topdressing could improve the yield and quality of cherry tomato；compared with N treatment，
50%N treatment could increase the contents of soluble solid，soluble sugar，titratable acid，VC and nitrogen
use efficiency in cherry tomato，but there were no significant influence on the plant growth，development and
yield of cherry tomato．Therefore，under the condition of soil nutrients and organic fertilizer basal application
closed to the experimental condition in this study，if taking cherry tomato‘Qianxi’ as cultivated variety and
the target yield for winter-spring of‘Qianxi’ was 45 000 kg · hm-2，the recommended amount of fertilizer were
N 120 kg · hm-2，P2O5 75 kg · hm-2，and K2O 360 kg · hm-2．If taking cherry tomato‘Hongyu’ as cultivated
variety，the target yield for autumn-winter of‘Hongyu’ was 60 000 kg · hm-2，the recommended amount of
fertilizer were N 135 kg · hm-2，P2O5 90 kg · hm-2，and K2O 405 kg · hm-2．
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Received: 07 June 2020
Published: 25 August 2020
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Corresponding Authors:
王君，女，助理研究员，专业方向：
设施蔬菜栽培生理和分子生物学，E-mail：wangjun01@caas.cn
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