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척박지에서 퇴비와 무기질 비료가 옥수수 생장에 미치는 영향

Organic Manure Compost and Inorganic Fertilizer Levels Affect Maize Growth in Barren Soils

  • 김경희 (동국대학교 생명과학과) ;
  • 김규원 (동국대학교 바이오환경과학과) ;
  • 이상용 (동국대학교 바이오환경과학과) ;
  • 이병무 (동국대학교 생명과학과)
  • Kyung-Hee Kim (Department of Life Science, Dongguk University-Seoul) ;
  • Gyu Won Kim (Department of Biological and Environmental Science, Dongguk University-Seoul) ;
  • Sang-Ryong Lee (Department of Biological and Environmental Science, Dongguk University-Seoul) ;
  • Byung-Moo Lee (Department of Life Science, Dongguk University-Seoul)
  • 투고 : 2023.10.12
  • 심사 : 2023.11.02
  • 발행 : 2023.12.01

초록

본 연구는 척박한 토양에서 퇴비 함량이 옥수수의 초기 생육에 미치는 영향을 조사하고, 척박지에서 옥수수 수확량을 늘리기 위한 재배 기술에 대한 정보를 제공하고자 수행되었다. 1) 척박한 토양에 퇴비량이 많을수록 품종에 관계없이 옥수수가 양호하게 생장하였으나, 척박지에 퇴비를 처리하지 않은 무처리 시험포장에서는 모든 품종에서 초기생육이 부진한 것으로 나타났다. 기본적으로 유기질 비료인 퇴비는 옥수수 성장을 위해 반드시 공급해야 한다는 사실을 발견했다. 2) 신황옥2호(조숙종/조생종)는 모든 퇴비 처리구(1,500, 1,000kg/10a)에서 64~65일로 가장 짧은 출사일을 보였으나, 퇴비 무처리구(퇴비 0 kg/10a)에서는 75일로 약 10일 정도의 차이를 보였다. 반면 광평옥(중생종)과 다청옥(중만생종)은 모든 퇴비 처리구에서 72~78일로 신황옥2호 보다 출사기가 8~13일 정도 늦게 출현했다. 3) 퇴비 처리구(1,500, 1,000 kg/10a)에서는 퇴비량이 많을수록 종실중이 증가했고, 표준시비(1)에 비해 시비량이 감소하면 종실중도 감소했다. 반면, 퇴비 무처리구(0 kg/10a)에서는 퇴비 처리구(1,500, 1,000 kg/10a)에 비해 전반적으로 종실중이 감소했다. 4) 옥수수는 성장의 모든 측면에서 유기물(퇴비) 비료의 영향이 미치는 것으로 확인하였으며, 특히 척박하고 열악한 토양에서 옥수수를 재배하는 경우 안정적인 옥수수 수확량을 확보하기 위해 최소 1,000 kg/10a의 퇴비와 표준시비2/3 (화학비료)를 시용해야 한다는 사실을 확인했다.

This study aimed to investigate the effect of manure compost content on early growth of maize in barren soils, to establish cultivation techniques that can increase maize yields on barren soils and to provide information on cultivation techniques. The results showed that in the manure compost treatments (1,500 and 1,000 kg/10a), yields increased with increasing amounts of manure compost compared to those of standard fertilization and decreased with decreasing amounts of manure compost. In addition, in fields with the no manure compost treatment (0 kg/10a), yields decreased overall compared to yields of fields treated with manure compost (1,500 and 1,000 kg/10a) regardless of the amount of fertilization. Maize growth was good irrespective of variety when compost was applied in high amounts to the barren soil, but poor initial growth was observed in all varieties in the untreated plots where no compost was applied to the barren soil. These results confirm that maize is affected by organic (manure compost) fertilizer in all aspects of its growth, and that a minimum of 1,000 kg/10a of manure compost and two-thirds (0.6) of chemical fertilizer should be applied to ensure stable maize yields, particularly when maize is grown on barren soils.

키워드

과제정보

본 연구는 농촌진흥청 공동연구사업(과제번호: PJ016265022023)의 지원을 받아 연구되었음.

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