EFFECTS OF N APPLTCATION AT DTFFERENT GROWTH STAGES ON GROWTHNODULATIONAND YTELD OF SOYBEANS(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:

1997年02

Page:

125-130

Research Field:

Publishing date:

Info

Title:

EFFECTS OF N APPLTCATION AT DTFFERENT GROWTH STAGES ON GROWTHNODULATIONAND YTELD OF SOYBEANS

Author(s):

Gan Yinbo Chen Jing Ineke Stulen

( Hubei Academy of Agricul tural Sciences, Wuhan 430064)

( Department of Plant B iolog y , Universi ty of Groningen , Netherlands)

Keywords:

Soy bean;  Nit rog en;  Nodule;  Grow th N-fixa tion;  Yield

PACS:

-

DOI:

10.11861/j.issn.1000-9841.1997.02.0125

Abstract:

A field ex periment w hich consist of two so ybean g enotypes w as co nducted to studythe ef fects o f N application a t dif ferent stag es on nodula tion, g row th and yield of soybeans. Al though a starter N of 25 kg N /ha co uld cause to obtain hig h nodule dry w eighty at nit rog en nutrient f rom the N-fix ation i s insufficient for max imuming plant g row thand yield. A N top dressing o f 50 kg N /ha a t f low ering stag e ( R1) o r seed fo rmationstag e ( R5) , co uld cause both v arieties to obtain highest biomass and yield. Too high Napplicatio n before flow ering reduced both nodula tion a nd N-fixa tion sig ni fica nt ly. Furthertoo high N applica tion befo re flow ering stag e had no sig nificant ef fect on so ybeanyield comparing w ith the t reatment of applying a sta rter N of 25 kg N /ha.

References:

[1 ]　Demooy CJ and Sutherland PL 1979. Soil-f erti lit y requi rem en t of s oybeans wi th reference t o i rrigati on. In:Irri gated Soybean Producti on in Arid and Semi Arid Regions. EDs W H Hud y and Kack obs. pp 276-352.TN T SO Y s eries No. 20, Int ernati onal Agri cul ture Pub li cati ons, Univ ersi ty of Illinosis , Urbanachampaign, USA.[2 ]　Marsch er H 1986. Min eral Nut ri ti on of High er Plant. Acad emic Press , Inc. , London , U K. P. 674.

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Memo:

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