リンゴ剪定枝の堆肥化においてチップ粒度が腐熟に及ぼす影響  [in Japanese] Comparison of Coarsely Shredded and Finely Shredded Apple Prunings in Composting with Poultry Manure and Calcium Cyanamide  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

リンゴ剪定植を粒度の異なる2種類のチップとし,これらに鶏ふんと石灰窒素を加えて344日間の堆肥化を行い,粒度が腐熟に及ぼす影響を検討した.得られた結果は,つぎの通りである.1)堆肥の温度は,粒度が細かいチップを用いた場合より粗いチップを用いた方が高く推移した.2)粒度の細かいチップよりも粒度の粗いチップを用いた方が,チップの微細化が速やかに進行するとともにチップのC/N比の低下が速やかであった.3)203日目と344日目のリンゴ剪定枝堆肥を土壌と混和してインキュベートした場合には,粒度の粗いチップを用いた堆肥は有機化を引き起こさなかったのに対して,粒度の細かいチップを用いた堆肥は344日目においてもわずかながら有機化を引き起こした.4)コマツナを用いた幼植物試験の結果は,いずれの堆肥も203日間の堆肥化で植物生育を阻害しなくなっており,跡地土壌にはかなりの無機態窒素が残存していた。以上の結果から,粒度の細かいリンゴ剪定枝チップを用いた場合より,むしろ粒度の粗いチップを用いた方が腐熟の進行が速かったと推定された。しかし,剪定枝チップの粒度にかかわりなく,春期に堆肥化を開始して200日程度堆積すれば,植物生育に悪影響を及ぼさない堆肥が製造できることが示された.

The effects of the shredding size of apple prunings on the compost maturation process were studied during the 344-d period of composting. Two composts were prepared from the coarsely shredded (compost A) and finely shredded (compost B) apple prunings by mixing with poultry manure and calcium cyanamide. Compost A was maintained at a higher temperature than compost B. Particle size fractionation of the compost samples revealed disintegration of woody materials and a decline in the C/N ratio of coarse particles during the composting period, the changes being faster in compost A than in compost B. When the compost samples taken at 203 and 344 d were incubated in a soil with ammonium sulfate, compost A did not show any immobilization of inorganic nitrogen whereas compost B showed slight immobilization even after the 344-d period of composting. Thus, it was concluded that the maturation process of the compost from the coarsely shredded prunings proceeded faster than when the finely shredded prunings were used. From a seedling growing test using Komatsuna (Brassica campestris L.), no inhibitory effects on plant growth were observed for either compost after the 203-d period of composting, and the presence of sufficient amounts of inorganic nitrogen was confirmed in the soils after the harvest of Komatsuna seedlings. This fact demonstrated that irrespective of the shredding size of apple prunings, the 203-d period of composting provided products which had no inhibitory effects on plant growth.

Journal

  • Japanese Journal of Soil Science and Plant Nutrition

    Japanese Journal of Soil Science and Plant Nutrition 75(5), 583-591, 2004

    Japanese Society of Soil Science and Plant Nutrition

References:  19

Cited by:  2

Codes

  • NII Article ID (NAID)
    110001755434
  • NII NACSIS-CAT ID (NCID)
    AN00195767
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0029-0610
  • NDL Article ID
    7114031
  • NDL Source Classification
    ZR7(科学技術--農林水産--農産)
  • NDL Call No.
    Z18-331
  • Data Source
    CJP  CJPref  NDL  NII-ELS  IR  J-STAGE 
Page Top