Simulation of greenhouse cucumber growth,water and nitrogen dynamics in areas with high groundwater(HG)levels using the HG EU-Rotate_N model  

作　　者：Bing Hua Zhuangzhuang Cao Kefeng Zhang Xiangying Xu Yonglong Zhang Haibo Dai Zhiping Zhang Jiezeng Jiang Minmin Miao 

机构地区：[1]College of Horticulture and Plant Protection,Yangzhou University,Yangzhou 225009,China [2]Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China,Yangzhou University,Yangzhou 225009,China [3]Key Laboratory of Plant Functional Genomics of the Ministry of Education/Jiangsu Key Laboratory of Crop Genomics and Molecular Breeding,Yangzhou University,Yangzhou 225009,China [4]Ningbo Institute of Technology,Zhejiang University,Ningbo 315100,China [5]College of Information Engineering,Yangzhou University,Yangzhou 225009,China

出　　处：《Vegetable Research》2022年第1期148-158,共11页蔬菜研究（英文）

基　　金：supported by the Special Funds for Scientific and Technological Innovation of Jiangsu province,China (BE2022425);Project of Jiangsu Province Science and Technology (BE2017380);the National Key Research and Development Program (2018YFD1000800);the National Natural Science Foundation of China (32072579,31672160 and 30871721).

摘　　要：The fruit yield of cucumber are associated with high input of nitrogen,which poses a risk of pollution to the environment.The EU-Rotate_N model has been used widely for its high performance in the simulation of vegetable growth,water and nitrogen dynamics.However,whether the underground water level affects the performance of the EU-Rotate_N model is unclear.In this study,we modified the groundwater level algorithms to the original model and named the modified model'the HG EU-Rotate_N model'.Experiments over two years on greenhouse cucumber with four different nitrogen(N)treatments(N1-N4)were conducted in Jiangsu Province,China,which has a high groundwater level(area_(HG)).Both original and modified models were used to simulate cucumber growth,water movement and N fate.For the soil water content,the measured values were significantly larger than the simulated values of the original model(value_(O))and closer to those of the HG model(value_(HG));for the soil available nitrogen concentration(SNC),the measured values were significantly higher and lower than value_(O) in 0−10 cm and 10−30 cm soil layers,respectively,and were also closer to those of the values_(HG).The higher SNC in the 0-10 cm soil layer indicated that a high groundwater level might increase the upwards movement of water and nitrogen in the 0-30 cm soil layer.The root mean square error,Nash Sutcliffe Efficiency and difference values show that the HG model was more applicable for areaHG than the original model.In this study,the nitrogen dosage of the N3 treatment was sufficient to meet the requirements of cucumber growth,indicating that the fertilization recommendation according to nitrogen nutrient balance was applicable in this area.

关 键 词：GREENHOUSE CLOSER SOIL 

分 类 号：S626.5[农业科学—园艺学]