臺灣粘板岩質沖積土有效性磷與水稻生長效應之相關研究(第一報)

曾憲鼎; 王接皇; H.D. Tseng; C.H. Wang

doi:10.29951/JARC.196406.0003

臺灣粘板岩質沖積土有效性磷與水稻生長效應之相關研究(第一報)

Other Title

A Study on the Correlation between Availablb Phosphorus of Slate Alluvial Soils and Response of Rice (Part 1)

Journal

農業研究

Journal Volume

13

Journal Issue

2

Start Page

20

End Page

26

Date Issued

1964-06-03

Date

1964-06-03

Author(s)

曾憲鼎

王接皇

H.D. Tseng

C.H. Wang

DOI

10.29951/JARC.196406.0003

URI

https://scholars.tari.gov.tw/handle/123456789/13466

Abstract

一、為研究臺灣粘板岩質沖積土有效性磷量與水稻生長效應之相關，在臺灣十七個地區採取之粘板岩質沖積土之稻田土壤於溫室中進行水稻盆栽試驗。二、盆栽試驗之處理分為NPK及NK，每處理重複三次，每盆N, P2O5及 K2O之施用量按照處理各為120公斤/公頃。三、採用五種方法以測定土壤之有效性磷量，即（l) 0.1N NaOH 抽出法，（2）Olsen氏之0.5M NaHCO2法，(3) Bray 氏之 0.025N HCI 及0.03 N NH4F法，(4) Bray氏之0.1 N HC1及 0.03N NH4F法，及(5) Mehlich 氏之0.05 N HC1 及 0.025 N H2SO4 法。四、五種方法測定之土壤有效性磷量與稻谷產量百分率之相關，其中有三種方法達於相關顯著之標準，三種方法中以Olsen氏方法最優，Bray氏第一法次之，0.1 N NaOH 法略差。五、五種方法測定之土壤有效性磷量與水稻磷酸吸收量之相關，其中有四種方法達於相關顯著之標準，其中以Olsen氏方法最優，0.1 N NaOH 法次之，而 Mehlich 氏方法顯然不適合作為測定臺灣粘板岩質沖積土稻田土壤有效磷用。六、根據初步研究結果對臺灣粘板岩質稻田土壤可採用Olsen氏方法或Bray氏第一法以測定土壤之有效性磷，如按二法所測定土壤之有效性磷（P）量均在 10 ppm 以下時，施用磷肥對水稻可獲得增產效果。 1. A pot culture experiment was conducted in greenhouse for the study on the correlation between available phosphorus of slate alluvial soils and response of rice. The soils used in the experiment were collected from the slate alluvial soils at seventeen different localities in Taiwan. 2. Two treaments,NPK and NK,were used in the experiment and three replications for each treatment. The rates of application were 120-120-120 kg/ha and 120-0-120 kg/ha of N-P2O5-O-K2O. Ammoninm sulphate, Calcium superphosphate and potassium chloride were used as carriers of N, P and K. 3. Five methods were used to determine the available soil phosphorus, namely,(1) 0.1 N NaOH extraction method, (2) Olsen’s 0.5M NaHCO3 extraction method,(3) Bray’s 0.025 N HC1 and 0.03 N NH4F mixture extraction method, (4) Bray’s0.1 N HC1 and 0.03 N NH4F method, and (5) Mehlich’s 0.05 N HC1 and 0.025 NH2SO4 mixture extraction method. 4. The response of the yield of rice to phosphatic fertilizer was found significantly correlated with the available soil phosphorus determined by either of the three methods, out of which Olsen’s method is the best, Bray’s No. 1 method the next, and 0.1 N NaOH method the least. 5. The correlation between the available soil phosphorus determined by the five methods and the absorption of phosphorus (P2O5) of rice was found significant for four methods, out of which Olsen’s method is the best and 0.1 N NaOH method is the next. Mehlich’s method is obviously unsuitable for the determination of available soil phosphorus of slate alluvial soils in Taiwan. 6. Based on the result of preliminary study, Olsen’s method or bray’s No. 1 method may be used to determine the available soil phosphorus of the paddy of slate alluvial soils in Taiwan. As the avalable soil phosphorus (P) below 10 ppm, the response of rice to phosphate was found.

Publisher

農業試驗所

Type

journal article

File(s)

Name

journal_arc_13-2-3.pdf

Size

940.55 KB

Format

Adobe PDF

Checksum

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