Milled Rice Quality and Physicochemical of Korean Native Rice Cultivars Grown in Different Crop Residue and Tillage Management

유기물 피복과 경운관리에 따른 재래벼의 쌀 품위 및 이화학적 특성

  • Lee Byung Jin (College of agriculture, Gyeongsang National University) ;
  • Son Young Son (National Institute of Crop Science, RDA) ;
  • Ahn Jong Wwoong (Yeongnam Agricultural Research Institute, NICS, RDA) ;
  • Park Jae Hyun (College of agriculture, Gyeongsang National University) ;
  • Kang Jin Ho (College of agriculture, Gyeongsang National University) ;
  • Choi Zhin Ryong (College of agriculture, Gyeongsang National University)
  • 이병진 (경상대학교 농업생명과학대학) ;
  • 조영손 (작물과학원) ;
  • 안종웅 (영남농업연구소) ;
  • 박재현 (경상대학교 농업생명과학대학) ;
  • 강진호 (경상대학교 농업생명과학대학) ;
  • 최진용 (경상대학교 농업생명과학대학)
  • Published : 2005.11.01


Three new rice farming systems, i.e. (1) straw-mulched no-till rice cropping system(SMNTRCS), (2)straw-mulched no-till rice-vetch cropping system (SMNTRWCS), (3)conventional rice-barley cropping system(CRVCS) have been established and compared with (4)conventional rice cropping system(CRCS). Grain appearance of brown rice of Korean native rice cultivars in SMNTRCS and SMNTRVCS were better than those in CRBCS and CRCS. Grain appearance of milled rice in SMNTRCS was better than those of other cropping systems. Korean native rice cultivars showed more white belly and broken rice than those of recommended rice cultivars. Mg and K contents of Korean native rice cultivars were the highest in SMNTRVCS. Protein contents of all the cultivars tested were the highest in SMNTRCS. Protein contents of Korean native cultivars were higher than those of recommended cultivars. Amylose contents of the cultivars tested were from 16 to 22 percent, while those of Aedal and Jenmjo were significantly higher than those of the other cultivars. Alkali digestibility values(ADV) of milled rice grain, tested in $1.2\%$ potassium hydroxide for 23 h at $30^{\circ}C$, showed varietal differences and the cultivars grown in CRBCS were the highest and the lowest in CRCS.

1) 현미 품위는 무경운 짚 피복 벼 작부체계(SMNTRCS)와 무경운 짚 피복 벼-자운영 작부체계(SMNTRVCS)가 관햄 벼-보리 작부체계(CRBCS)와 관행 벼 작부체계(CRCS)보다 좋은 경향을 나타내었다. 백미 품위는 SMN TRCS에서 가장 우수하였다. 2) Mg와 K의 함량은 SMNTRVCS에서 가장 높았으며 Na 함량과 Mg/K는 CRCS에서 가장 높게 나타났다. 3) 단백질함량은 SMNTRCS에서 가장 높았으며, SMNTRVCS, CRBCS 및 CRCS순으로 감소하였다. 아밀로스함량은 SMNTRVCS에서 다른 작부체계에 비해 높게 나타났다. 4) 알카리붕괴도는 $1.2\%$ KOH농도에서 작부체계별 품종간 변이가 가장크게 나타났다. 모든 KOH농도에서 알카리붕괴도는 CRBCS에서 가장크게 나타났으며, CRCS가 가장 낮았다. 5) 양질미 생산을 위해서는 유기물 투입으로 질소시비량을 줄일 수 있는 작부 체계인 SMNTRCS 및 SMNTRVCS가 가장 유리 할 것으로 사료된다.



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