벼 최소경운 건답직파재배를 이용한 잡초성벼 방제

국문 초록 (Abstract)

본 연구는 벼 최소경운 건답직파재배기술을 이용하여 논잡초성벼 방제를 시도하기 위하여 2011년에 수행되었다. 벼 최소경운 건답직파재배는 1자형 로타리날을 이용하여 무경운 상태의 논에서 조파 27 cm간격으로 폭 4 cm의 파종골을 내어 파종하는 벼 건답직파재배 기술이다. 이 재배 기술은 파종 작업시 경운을 최소화하기 때문에 잡초성벼방제가 가능하다. 2012년의 경우 4월 28일 잡초성벼가 발생을 시작하였고 5월 9일경 잡초성벼 발생 비율이 61.9%이었다. 이때 파종을 하고 파종후 10일 제초제를 처리하면 89~96%, 파종후 15일에 처리하면 97~99%의 잡초성벼를 방제할 수 있었다. 하지만 해에 따라 잡초성벼 발생은 4월 중 기온과 강수량에 영향을 받아 달라질 수 있다. 따라서 잡초성벼를 효과적으로 방제하면서 안정적인 쌀 수량을 확보하기 위해서는 4월 15~20일경 관개하여 잡초성벼 발생을 유도하여 적정파종시기가 당겨지는 방법이 좋을 것으로 판단되었다.

다국어 초록 (Multilingual Abstract)

This study was tried to control the weedy rice using minimum tillage direct seeding of rice on dry paddy. Minimum tillage direct seeding on dry paddy is tilled with 4 cm in width at 27 cm intervals by 1-shaped rotary blade. Using this cultivation method can control weedy rice effectively by minimizing the soil disturbance. In this study, weedy rice was firstly emerged at April 28 in 2012. After 11 days emergence rate of weedy rice at May 9 was 61.9%. At this time rice was sown and then herbicides was treated at 10 and 15 days after sowing. When herbicides was treated at 10 days after sowing the control effect was 89-96%, and when treated at 15 days the control effect was 97-99%. However emergence of weedy rice differ according to the year and year. It was thought to be affected by April average temperature and total precipitation. So, for effective weedy rice control and stable rice yield, it was considered that irrigation at April 15-20 to induce the emergence of weedy rice is required.

참고문헌 (Reference)

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