水田における透水が水稲の生育に及ぼす影響 : 第I報水田の透水時期が水稲の生育収量および水中溶存O_2, free CO_2, 硫化物等に及ぼす影響

概要

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1) Since most of water soluble oxygen penetrating into the soil, is consumed by microorganisms in the soil layer 0 to 2cm in depth, the supply of oxygen to deeper layers is reduced to a large extent. 2) Total sulphide and free-CO_2 in the soil water decreased through percolation, while they increase gradually to the same level as in the check plot after percolation is stopped. 3) The germination percentage of rice seed and the shoot length under the soil water of the percolated plot are superior to those in the check. 4) Water percolation showed practically no effects on the growth and yield of rice as far as the experiment concerned.
日本作物学会の論文
1961-04-01