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- W2393116528 abstract "In order to understand the horizontal heterogeneity of soil nitrogen in the jujube-crop intercropping ecosystem(JIE),the experiment was carried out at village Dashujin,Nanpi County,Hebei Province during 2005-2006.The soil samples were collected from different site in JIE,i.e.0.25,1,2,3,4.5 and 6.5 m away from the jujube row to determine the horizontal distribution characteristics of soil total nitrogen(TN),nitrate nitrogen(NO3——N)and ammonium nitrogen(NH4+-N).The results showed that the horizontal variances of soil TN and NO3——N distribution were obvious at harvest stages of wheat and maize in JIE,but the distribution of soil NH4+-N had no obvious horizontal variance.When the distance to the jujube tree row(JTR)decreased from 6.5 m to 1 m,the soil TN concentration increased first and then decreased,and the highest soil TN concentration came from the 3 m sampling site.However,the NO3——N concentration increased rapidly along with the shortened distance to JTR.The results also showed that fertilizer application rate had a great positive effect on the horizontal variances of soil TN and NO3——N,whereas N uptake had a negative effect on them.The main factor affecting the spatial variance of soil TN was N uptake,followed by N application rate and soil water content,while the order of affecting the spatial variance of soil NO3——N was N application ratesoil TN concentrationN uptakesoil water content." @default.
- W2393116528 created "2016-06-24" @default.
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- W2393116528 date "2009-01-01" @default.
- W2393116528 modified "2023-09-24" @default.
- W2393116528 title "Horizontal Distribution Characteristics of Soil Nitrogen in Jujube-crop Intercropping Ecosystem" @default.
- W2393116528 hasPublicationYear "2009" @default.
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