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Article type: Cover
1940Volume 14Issue 6 Pages
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Article type: Appendix
1940Volume 14Issue 6 Pages
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Article type: Index
1940Volume 14Issue 6 Pages
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Toyotaro SEKI
Article type: Article
1940Volume 14Issue 6 Pages
327-334
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Matsuo TOKUOKA, Shushin GYO
Article type: Article
1940Volume 14Issue 6 Pages
335-344
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Es wurde der Einfluss des Mangans auf das Wachstum der Reispflanze durch Gefassversuch untersucht. Der Boden ist feinlehmiger mit pH 6.7 und die Varietat der Reispflanze ist Taichu Nr. 65. Die Vegetationszeit dauert von 7. VIII. 1939 bis 22. XII. 1939. Das Mangan wurde als Sulfat beim Saen mit dem Grunddunger zugegeben und die Menge varierten sich von 1 bis 1,000 v. M. (p. p. m.). Zusammenfassend die Resultate ergab die vorliegende Untersuchung das folgendes : 1) Die Mn-zugabe (MZ) von bis 600 v. M. verlangert die Pflanzenlange, und die MZ. daruber zeigt das Gegenteil. 2) Die Bestockungszahl vermehrt sich bei jedem MZ. 3)Die MZ. von bis 200 v. M. zeigt keinen Einfluss auf das Aehreschiessen aber die MZ. von 300 v. M. an lasst das Achreschiessen verspatern, und beim maximalen MZ. war des Verspatern etwa 2 Woche. 4) Die Mehrertrage an gesamten Ernten wurden bis 300 v. M. beobachtet, und sie verursachten meistens nur in Stroh und Wurzel. Der einzige Mehrertrag an Korn war nur bei 5 v. M. zu beobachten. 5) Die MZ. verschiebt die Bodenreaktion nach die alkalischen Seite. 6) Die MZ. zeigt eine geringe Zunahme am Kohlenstoffe im Blatt. Bei Stroh und Wurzel war der Einfluss von MZ. auf C-Gehalt kaum zu verfolgen. Der C-Gehalt (% im bei 115℃ getrockneten Substanz) in drei Teilen ist folgendes : Blatt : 40.52-44.19 Stroh : 39.81-42.29 Wurzel : 34.22-36.48. 7) Die MZ. zeigt etwa gleiche Einflusse auf den N-Gehalt von Stroh, Wurzel und Blatt. Anfangs wachst der N-Gebalt mit der MZ. und das erste Maximum befindet sich bei MZ. Von 20 v. M., dann vermindert sich der N-Gehalt bis MZ. von 600 v. M., wo das Minimum existiert. Bei MZ. von. 1,000 v. M. wachst der N-Gehalt plotzlich zu allergrosste Wert. Der N-Gehalt in drei Teiled ist folgendes : Blatt : 0.99-1.59% Wurzel : 0.84-1.42% Stroh : 0.56-1.20%. 8) Das C : N-Verhaltnis verandert sich mit den Schwankungen von N-Gehalt in Stroh, Blatt und Wurzel, und zwar gegenseitig mit N-Gehalt. 9) Die von der Reispflanze absorbierten Menge von Mn variert sich entsprechend der zugegebener Mn-Menge, und das Absorpt bei jeden Teil der Pflanze, wo zum erst die hemmende Wirkung des Mangans zum Vorschein kommt, war 0.0065% (Blatt), 0.0033% (Stroh) und 0.0024% (Wurzel). Das %-Ansatz wurde als % im bei 115℃ getrockneten Substanz angegeben.
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Rokuro KAWASHIMA, Genichiro SUYAMA
Article type: Article
1940Volume 14Issue 6 Pages
345-351
Published: June 25, 1940
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The reaction of many of the sand pears (Pirus Serotina Rehd.) orchard soils now examined are about pH 5 and their degrees of lime saturation are very low. Owing to the successive dressings of lime, the surface soils of some orchards are basic of about pH 8,but in cases of loamy textured profiles their subsoils are still acidio. Therfore it is manifested that in such profiles the leaching down of lime applied in surface layer is very slow.
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[in Japanese]
Article type: Article
1940Volume 14Issue 6 Pages
352-
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1940Volume 14Issue 6 Pages
352-354
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
356-357
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[in Japanese], [in Japanese]
Article type: Article
1940Volume 14Issue 6 Pages
357-359
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1940Volume 14Issue 6 Pages
359-362
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1940Volume 14Issue 6 Pages
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H.W. SHANG
Article type: Article
1940Volume 14Issue 6 Pages
362-365
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1940Volume 14Issue 6 Pages
366-367
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1940Volume 14Issue 6 Pages
367-368
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1940Volume 14Issue 6 Pages
368-369
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1940Volume 14Issue 6 Pages
369-370
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1940Volume 14Issue 6 Pages
370-372
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1940Volume 14Issue 6 Pages
373-375
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1940Volume 14Issue 6 Pages
375-377
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
379-380
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1940Volume 14Issue 6 Pages
380-381
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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1940Volume 14Issue 6 Pages
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