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Article type: Cover
1940 Volume 14 Issue 9 Pages
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Published: September 25, 1940
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Rokuro KAWASHIMA, Masanao NAGATA, Gen-ichiro SUYAMA
Article type: Article
1940 Volume 14 Issue 9 Pages
547-554
Published: September 25, 1940
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In this paper the chemical properties of a very sandy reclaimed marsh soil enclosed by dyke in 1925,is dealt with. 1. The advance of drainage causes the oxidation of sulphide mineral in surface soils and some of these are changed acid of about pH 6. But the pH-values of water-logged subsoils are all over 8. 2. The salt contents of underground waters are low and amount to 0.248-0.644 grams in 100 cc. Cl and Na are dominant, and SO_4 and Mg stand next. 3. The water soluble salt contents of soils are relatively low and amount to 0.024-0.286%. With the advance of drainage decrease the percentage contents of Cl and Na, and increase those of SO_4,HCO_3,Ca and Mg. 4. The status of exchangeable cations differ much with localities. With the advance of drainage increase the percentage contents of H and Ca, and decrease those of Mg and (K + Na.). In a acid surface soil H occupy 55.4 parts of exchange capacity.
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Hideo MISU
Article type: Article
1940 Volume 14 Issue 9 Pages
555-566
Published: September 25, 1940
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Takeo NAGATA
Article type: Article
1940 Volume 14 Issue 9 Pages
567-586
Published: September 25, 1940
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Matsuo TOKUOKA, Shushin GYO
Article type: Article
1940 Volume 14 Issue 9 Pages
587-596
Published: September 25, 1940
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Es wurde der Einfluss des Zinks auf das Wachstum der Weizen durch denr Gefassversuch untersucht. Der Boden ist feinlehmiger mit pH 6.7 und die Varietat der Weizen ist Saitama 27. Die Vegetationszeit dauert 12. XII. 1939-6. IV. 1940. Zusammenfassend ergab die vorliegende Untersuchung die folgenden Resultate : 1) Die Zinkzugabe (ZG.) varierte sich von 1 bis 2,000 v. M. (p.p.m.) und zwar als ZnSO_4. Bei der hohsten ZG. war es keimunfahig, und bei 1,000 v. M. starben die Pflanzen gegen 20. II. 1940 ohne die Aehre zu schiessen 2) An der Pflanzenlange und der Bestockungszahl haben die Topfe von bis 200 v. M. ZG. die Kontrolle uberlegen. 3) Bei ZG. von 5 v. M. an war das Aehreschiessen fruher als die Kontrolle. 4) Die Mehrertrage an dem Korn, dem Stroh und der Wurzel wurden bei dem ZG. von bis 200 v.M. beobachtet. 5) Der Einfluss von ZG. auf den C-Gehalt der Pflaneznteilen war nicht zu bemerken. 6) Das Zink hat im allgemeinen den N-Gehalt der Pflanzenteilen vermindert, wenn der Einfluss auch nicht betrachtlich gewesen war. 7) Die ZG. hat das C : N-Verhaltnis vergrossert, und bei dem Stroh war es betrachtlich 8) Der Zn-Gehalt, wo die Giftwirkung des Zinks erst bemerkt wurde, ist folgendes : Stroh : 0.0012; Blatt : 0.0016; Wurzel : 0.0016 (als % in bei 110℃ getrockneten Substanzen angegeben).
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
597-
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
597-
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
597-
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
597-598
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
598-
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
598-
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
598-599
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
599-
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
599-600
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
600-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
600-
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
601-
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
601-
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
601-
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
601-602
Published: September 25, 1940
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[in Japanese]
Article type: Article
1940 Volume 14 Issue 9 Pages
602-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
602-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
602-603
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
603-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
603-604
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
604-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
604-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
604-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
604-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
605-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
605-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
605-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
605-606
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
606-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
606-
Published: September 25, 1940
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Article type: Article
1940 Volume 14 Issue 9 Pages
606-
Published: September 25, 1940
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Article type: Appendix
1940 Volume 14 Issue 9 Pages
App1-
Published: September 25, 1940
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Article type: Cover
1940 Volume 14 Issue 9 Pages
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Published: September 25, 1940
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Article type: Cover
1940 Volume 14 Issue 9 Pages
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Published: September 25, 1940
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