メタン発酵消化液の施用が南九州におけるトウモロコシ : イタリアンライグラス体系の収量性と飼料品質に及ぼす影響  [in Japanese] Effect of Digested Effluent of Manure on Yield, Forage Quality and Nitrogen Recovery Rate of Maize-Italian Ryegrass Cropping System in Southern Kyushu  [in Japanese]

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Abstract

トウモロコシ-イタリアンライグラス体系におけるメタン発酵消化液(消化液)の2年間の連用施肥効果を,化成肥料単独施用(化成区)および慣行施肥(牛糞堆肥と化成肥料の併用,慣行区)と比較した。消化液の施用量は,標準,多および極多区くそれぞれ40, 70および100gN/m^2/年)の3水準とした。化成区では標準区と同量(40gN/m^2/年)のN施用量とし,慣行区では69.2gN/m^2/年で,多区とほぼ同量のN施用量であった。その結果,消化液は短期的には同量の無機養分を含有する化成肥料と同等の肥効を有し,南九州のトウモロコシ-イタリアンライグラス体系での適正な消化液の施用量は,収量,発酵品質,安定性,見かけのN回収率および環境への影響などを総合的に判断すると年間40gN/m^2以下が望ましいと推察された。

A 2-year field experiment was conducted to examine the fertilizing effect of digested effluent of manure (DEM) on growth attributes, dry matter yield, forage quality and nitrogen (N) recovery rate of maize (Zea mays L.)-Italian ryegrass (Lolium multiflorum Lam.) cropping system, compared with application of conventional fertilizer (commercial cattle manure and chemical fertilizer) and sole chemical fertilizer. The DEM solution was applied at three levels : 40, 70 and 100 gN/m^2/year for low, medium and high levels, respectively. The N application level in the chemical and conventional fertilizer treatment were 40 and 69.2 g N/m^2/year, respectively, which were similar to and the same as in the low and medium levels of DEM, respectively. The effect of DEM on growth attributes, yield, forage quality and nitrogen recovery rate of each cropping and total of this cropping system was almost corresponded with that of the chemical fertilizer at the same N application rate. This suggests that DEM can be used in short-term as substitution of fastly effective chemical fertilizer and optimum application rate of DEM should be below 40 gN/m^2/year in the maize-Italian ryegrass cropping system in southern Kyushu.

Journal

  • Japanese Journal of Grassland Science

    Japanese Journal of Grassland Science 58(4), 230-240, 2013

    Japanese Society of Grassland Science

References:  34

Codes

  • NII Article ID (NAID)
    110009586186
  • NII NACSIS-CAT ID (NCID)
    AN00194108
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    0447-5933
  • NDL Article ID
    024233669
  • NDL Call No.
    Z18-344
  • Data Source
    CJP  NDL  NII-ELS  IR  J-STAGE 
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