脱脂米ヌカ炭化資材とその塩化鉄(III)処理資材が硝酸態窒素の吸着保持とメロン、ダイコンの生育に及ぼす影響

概要

論文の詳細を見る
Water pollution that seriously harms human health is reported to occur when the amount of nitrate nitrogen (N) in water exceeds 10mg L^<-1>. The source of dissolved nitrate N in agricultural areas is often fertilizer and hog or cattle dung. The rate of percolation through the soil affects leaching losses of nitrate N, and the high percolation rates in sandy soils leads to high leaching losses, which in turn increase the risk to human health. Carbide is commonly used to prevent the loss of nitrate N.In this study, we evaluated the effect of carbide soil amendments that originated from risk husk (Cc) or bran (Bc), with and without iron (III) chloride (Fe), on the growth of crops and leaching of nitrate N from sandy soils. The Cc amendment, with or without Fe, had no effect on the leaching of nitrate N in a model experiment compared with the amount of leaching in the absence of carbide. Less nitrate N was leached in the Bc treatment, with or without Fe (Bc+Fe and Bc, respectively), in the model experiment. The anion-exchange capacity (AEC) in the Bc+Fe treatment was 15 to 20cmol(-)kg^<-1>, but was negligible in the Bc treatment. The lower leaching of nitrate N in the Bc+Fe treatment may thus have been caused by the higher AEC, whereas the reduced leaching in the Bc treatment may have been caused by the porous structure of the Bc. The leaching of nitrate N was lower in the Bc and Bc+Fe treatments in both the pot and field experiments without carbide amendment. Plants grown in a pot experiment with Bc or Bc+Fe treatments and plants grown in the field experiment with the Bc+Fe treatment grew better than plants without a carbide amendment. This suggests that crops could more readily absorb nitrate N adsorbed by Bc+Fe or Bc in both the pot and field experiments.
2008-04-05

脱脂米ヌカ炭化資材とその塩化鉄(III)処理資材が硝酸態窒素の吸着保持とメロン、ダイコンの生育に及ぼす影響

スポンサーリンク

概要

著者

関連論文

スポンサーリンク