環境の相異と直播甘藷の生育収量との関係について : 第1報 土壤水分の相異と生育収量の関係 : 第2報 土壤の種類並びに標高の相異と生育収量の関係

• 児玉 敏夫

  関東々山農業試験場

• 野本 達郎

  関東々山農業試験場

• 渡辺 和之

  関東々山農業試験場

書誌事項

タイトル別名

• Studies on the Growth and Yield of Sweet Potato Plant Sown Directly under Different Cultural Conditions : 1. On the growth and yield under different water contents of soil : 2. On the growth and yield under different kinds of soil and cultural elevation.

抄録

For the purpose of clearing up the suitable cultural conditions for the directly planted sweet potato plant, we compared the growth and yield between direct sowing and transplanting cultivation under several cultural conditions. The results were as follows; 1) Water content of soil; the smaller the water content of soil the larger the ratio of yield in top and root of directly sown plants to that of transplanted ones. 2) Kind of soil; we used 4 kinds of soils, that in black coloured volcanic ash soil rich in humus, brown coloured volcanic ash soil, alluvial clayey soil and sandy soil. The yield of roots of directly sown plants were larger than that of control in sandy soil and brown coloured volcanic ash soil, but on the contrary reversed in black coloured volcanic ash soil and aleuvial clayey soil. The former two soils contained much air porosity as compared with latter ones in wet conditions. At the directly sowing cultivation, air porosity of soil had a tendency to be on the decrease as cornpared with control at growing period, because it needed about 40 days before sprouting and soil loosened by ridging became compact at sprouting time. So such a soil which had a tendency to decrease the air porosity at wet conditions was not suitable for directly sowing cultivation. 3) Elevation of the field; the yield of roots of plant sown directly was larger than that of control on higher ground.

収録刊行物

• 日本作物學會紀事

  日本作物學會紀事 26 (3), 225-227, 1958-04-01

  日本作物学会

詳細情報

• CRID: 1571417126821633408
• NII論文ID: 110001737246
• NII書誌ID: AN00189888
• ISSN: 00111848
• 本文言語コード: ja
• データソース種別:
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