砂丘地タバコ作における堆肥の効果について : 第1報施用有機物の消長がタバコの生育および養分吸収におよぼす影響

概要

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This paper deals with the relationship between tobacco growth and organic matter content of soil in the sand-dune field in Yonago from 1964 to 1966. Results obtained were as follows; (1) The cultivation without manure reduced the yield of fluecured tobacco by about 10% in the non-manured fields for a year, and about 15% in the non-manured fields for two years as compared with the manured fields. (2) Fifty to sixty percent of added organic material was consumed for a year. Consumption of organic matter in the non-manured fields for one year was about 10% less than in the manured fields. Added organic matter in the non-manured fields was consumed perfectly for two years. (3) Organic nitrogen content in the soil varied according to organic matter content, NO_3-N in the soil markedly decreased by early summer regardless of manure. The level of NO_3-N in the manured soil was slightly higher than those without manure in the latter half stage of growth. (4) In the case without manure, nitrogen and magnesium uptake by tobacco plant were markedly decreased in the latter half stage of growth, and also dry weight of tobacco plant varied in parallel with nitrogen absorption. It is concluded that the manure serves as an important source of mineral nitrogen in the latter half stage of growth.
日本作物学会の論文
1968-12-10