Loss of mineral nitrogen from soil

摘要: 1. The pattern of downward movement nitrate in light soil is different from that heavy clay the kind used this work.2. In sandy soils, where vertical structural fissures are absent, becomes distributed down profile on leaching.3. which well fissured and possess a gleyed horizon partially decomposed plant debris at cultivation depth, most disappears after removal, by leaching or denitrification, layer.4. There little difference amount rain required to remove surface layers soil.5. Heavy continuous completely either soils.6. Nitrification ammonium sulphate more rapid summer than winter, but nitrification does proceed slowly during winter.7. Ammonium nitrogen not leached layer soil.