쌀겨와 EM 처리시 초기 환원장해 및 잡초방제 효과에 따른 벼 수량 

이순계^1＊,  최현구¹, 이재철¹, 정종태¹, 신철우¹, 오세현¹, 김성제², 이장열², 김철수³, 변종영⁴

충남농업기술원¹, 보령 농업기술센터², 보령 쌀연구회³, 충남대학교 식물자원학부⁴

Yield of Rice as Affected by Reduction Stress and Weed Control due to Rice Bran and Effective Microorganism Application in Rice Bran Culture

Sun Gye Lee¹*,  Hyun Gu Choi¹, Jae Choul Lee¹, Chong Tae Chung¹, Choul Woo Shin¹, 

Se Hyeon Oh¹, Seong Je Kim², Jang Yeol Lee², Chell Su Kim³ and Jong Yeong Pyon⁴

 1^{Chungnam Agricultural Research & Extension Service,}2^{Boryeong Agricultural Technology Center,}3^{Boryeong Rice Research Association, and}4^{Chungnam National University}

실험목적

화학비료의 과다의존과 지나친 농약사용으로 우리의 토양과 수질은 오염이 심각해지고 있으며 쌀수입 개방화에 따라 외국쌀과의 경쟁에서 살아남을 수 있게 하기 위해서는 환경을 보전하며 안전한 친환경농산물을 생산하여 농가 소득증대를 위한 쌀겨농법 재배기술을 확립하고자 본 시험을 수행하였다.

재료 및 방법

○ 본 실험은 2005년도 보령 키토산 친환경재배단지에서 현지시험으로 수행하였다. 시험품

종은 고시히까리를 중묘로 5월 31일 이앙하였으며 써레질을 2회 실시하였다.

○ 시비량은 1차 써레질전 유박비료를 2,000kg/ha, 쌀겨는 써레질후 5일(이앙후 5일)에 1,500kg/ha, 이삭거름으로  N- K 비료를 14- 14kg/ha을 시용하였다. 

○ 써레질 당일에 벼를 이앙하였으며 쌀겨는 써레질후 5일(이앙후 5일)에 처리하였고 이 앙후 25일에 중경제초를 1회 실시하였다.

○ 초기 벼의 환원장해 및 생육을 이앙후 10일부터 10일 간격으로 50일까지 5회에 걸쳐 조사하였다.

실험결과

○ 쌀겨처리시 잡초방제효과 및 환원장해를 줄이기 위해 써레질 당일에 이앙하고 이앙후 5일에 쌀겨처리시 환원장해가 경감되었다. 

○ EM처리구에서 쌀겨처리구보다 초기 환원장해가 적어 벼의 생육이 이앙후 30일까지는 좋았는데 이는 EM에 의한 미생물이 쌀겨를 빨리 분해하였기 때문으로 사료된다. 

○ EM과 쌀겨처리후 이앙 25일에 중경제초를 1회 실시하였을 때 잡초방제효과는 EM처리에서는 중경제초를 실시하지 않았을 때 70.8%에서 84.4%로 높아졌으며 쌀겨처리구에서도 무처리에서 67.8%에서 82.2%로 높아졌다. 

○ 정조 쌀수량은 무처리구 4.26M/T/ha 대비 EM과 쌀겨의 로타리 1회 처리에서 7.39～7.44M/T/ha 으로 42.7～42.4% 증수되었다.

ꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏꠏ연락처 : 이순계  E- mail : Isoong4@hanmail.net  전화 : 041- 330- 6245

Table 1. Rice reduction stress to disorder of plants by rice bran and Effective Microorganism application.

*^{EM : Effective Microorganism}

Table 3. Weed control effect as affected by application time of rice bran and Effective Microorganism 

*Ec: Echinochloa crus- galli Beauv.      Mv: Monochoria vaginalis Presl.

Ek: Eleocharis kuroguwai Ohwi.        St: Sagittaria trifolia Rottb.

Table 4. Yield and yield component of rice as affected by planting density of rice in rice bran and Effective Microorganism culture.