Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Effects of Lime and Phosphate Applications on Growth and Nitrogen Fixation of Alfalfa in Acid Soil

산성토양에서 석회와 인산시용이 Alfalfa의 생장 및 질소고정에 미치는 영향

  • Jeon, U-Bok (College of Agriculture, Chonnam National University) ;
  • Choe, Gi-Chun (College of Agriculture, Chonnam National University) ;
  • Kim, Jeong-Cheol (College of Agriculture, Chonnam National University) ;
  • Kim, Dong-Hu (College of Agriculture, Chonnam National University) ;
  • Kwang Hyun Kim (College of Agriculture, Chonnam National University)
  • 전우복 ;
  • 최기춘 ;
  • 김정철 ;
  • 김동후 ;
  • 김광현
  • Published : 1993.12.01
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Abstract

We investigated the effects of applications of various levels of lime(0, 250, 500 and 1,000 kg/10a) and phosphate (0, 17 and 34 kg/10a) on growth and nitrogen fixation of alfalfa (Medicago sativa L.). Effects of lime and phosphate applications were significantly different on dry matter (DM) weight of each part and on acetylene reduction activity (ARA) of alfalfa at 9 weeks alter sowing (p<.05). The effect of lime on DM of shoot and root was not significantly different at 14 weeks after sowing (early bloom stage), but that of phosphate on DM was significantly improved as increasing of phosphate levels (p<.01). The effects of lime and phosphate on ARA were significantly increased (p<.05). Application of lime and phosphate decreased total nitrogen (TN) content of each part of alfalfa at 9 weeks after sowing (p<.05). The effects of lime application on TN was higher but that of phosphate application on TN was lower than no application of lime or phosphate at 14 weeks after sowing (p<.05).

본 시험은 석회(0, 250, 500, 1,000kg/10a)와 인산(0, 17, 34kg/10a) 시용이 alfalfa(Medicago sativa L.)의 생장 및 질소고정에 미치는 영향을 구명하기 위해 전남대학교 농과대학내 온실에서 pot로 수행되었다. 파종후 9과에 alfalfa의 지상부와 지하부의 건물중 및 아세틸렌 환원력에 있어서 석회 및 인산시용효과가 나타났으며(p<0.05). 파종후 14과(개화초기)에는 alfalfa의 지상부와 지하부의 건물중에 있어서 석회시용 효과는 인정되지 않았으나 인산시용이 증가함에 따라서 건물중은 증가하였다(p<0.01). 또한 석회 및 인산시용이 증가함에 따라서 아세틸렌 환원력은 유의적으로 증가하였다(p<0.05). 파종후 9과에서 전 질소함량은 석회 및 인산 시용구에서 무시용구보다 감소되었으며(p<0.05), 파종후 14과에서는 석회 시용구는 무시용구보다 전 질소함량이 증가되었으나 인산 시용구는 무시용구 보다 낮아지는 경향을 보였다(p<0.05).

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