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- W2360455696 abstract "Under the condition of complete nutrient solution,the effect of two kinds of nitrogen forms(nitrate nitrogen and ammonium nitrogen)and five nitrogen levels(0,105,210,315,420mg/L)on content of nitrogen in different parts of Medicago sativa L.cv.Gannong No.3and Medicago sativa L.cv.Longdong were studied at seedling stage by sand culture method.The results showed that the content of NO-3-N,the content of NH+4-N and total nitrogen content in different parts of alfalfa under nitrogen treatments were significantly higher than that of CK(P0.05).Gannong No.3and Longdong had same variation of nitrogen content in different parts.The variation showed a trend of increased first and then decreased with the increase of nitrogen level,but the maximum were not the same.Under the same nitrogen form and level,the content of NO-3-N,the content of NH+4-N and total nitrogen content in different parts of alfalfa showed:leaf root stem.Under the best treatment with NO-3-210 to ‘Gannon No.3',the content of NO-3-N in leave,stem,root were 490μg/g,385μg/g,463μg/g,respectively.they were 473μg/g,355μg/g,447μg/g in alfalfa of ‘Longdong'.Under the best treatment with NH+4-210to‘Gannon No.3',the content of NH+4-N in leave,stem,root were 212μg/g,182μg/g,194μg/g.The content of NH+4-N in stem and root of‘Longdong'were 177μg/g and 178μg/g,but the best treatment in leaf was NH+4-315,it was 189μg/g.Besides,under the best treatment with NH+4-315 to ‘Gannon No.3',the total nitrogen content in leave,stem,root were 4.25%,1.7%,3.47%,repectively.The total nitrogen content in leaf and root of‘Longdong'were 4.01% and 3.08%,but the best treatment in stem was NH+4-210,it was 2.33%.For the same part,the nitrogen content of‘Longdong'was higher than‘Gannon No.3'in stem,but the content of NO-3-N,NH+4-N and total nitrogen in the other parts of ‘Gannon No.3'were higher than that of‘Longdong'." @default.
- W2360455696 created "2016-06-24" @default.
- W2360455696 creator A5087608515 @default.
- W2360455696 date "2015-01-01" @default.
- W2360455696 modified "2023-09-22" @default.
- W2360455696 title "Effects of exogenous nitrogen forms and levels on nitrogen content in different parts of alfalfa seedlings" @default.
- W2360455696 hasPublicationYear "2015" @default.
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