牛ふん豚ぷん混合堆肥連用キャベツ栽培圃場における堆肥施用中止後の土壌化学性および生物性の変化

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タイトル別名
  • Effects of Ceasing Application of Mixed Cattle and Swine Manure on Soil Chemical and Microbiological Properties in a Cabbage Field
  • ギュウフン トンプンコンゴウ タイヒ レンヨウ キャベツ サイバイ ホジョウ ニ オケル タイヒシヨウ チュウシ ゴ ノ ドジョウ カガクセイ オヨビ セイブツセイ ノ ヘンカ

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抄録

Regular application of animal manure causes nutrient accumulation in the soil. We investigated the soil chemical and microbiological characteristics after cessation of the application of mixed cattle and swine manure to a cabbage field. Although yields of cabbage decreased each year, the ratio of yield to that of the control was influenced by the period of manure application. The contents of total carbon, total nitrogen (N), available N, inorganic N, phosphorus, potassium, magnesium, and zinc decreased every year, but that of copper increased. The biomass carbon content decreased to become not significantly different from that of the control. Manure application affected the soil microbial (especially fungal) community structure (DGGE profile) more than it affected microbial diversity (Shannon-Wiener index). Application of organic or chemical fertilizers according to both the soil nutrient contents and the rate of uptake by cabbage was necessary for sufficient yields. It promotes the conservation of soil environments.

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