한국작물학회지 (KOREAN JOURNAL OF CROP SCIENCE)
- 제46권6호
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- Pages.459-463
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- 2001
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- 0252-9777(pISSN)
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- 2287-8432(eISSN)
건답직파 벼-보리 장기간 이모작 재배시 벼 수량 및 토양 물리화학성 변화
Changes of Rice Yield and Soil Physicochemical Properties in Long-term Dry Seeded Rice-Barley Double Cropping
- Shin, Sang-Ouk (Natl. Yeongnam Agric. Exp. Station, RDA) ;
- Park, Sung-Tae (Natl. Yeongnam Agric. Exp. Station, RDA) ;
- Hwang, Chung-Dong (Natl. Yeongnam Agric. Exp. Station, RDA) ;
- Hwang, Dong-Yong (Natl. Yeongnam Agric. Exp. Station, RDA) ;
- Kim, Sang-Yeol (Natl. Yeongnam Agric. Exp. Station, RDA) ;
- Moon, Huhn-Pal (Natl. Yeongnam Agric. Exp. Station, RDA)
- 발행 : 2001.12.01
초록
벼 단작 만기 및 보리후작 건답직파의 수량성과 토양물리 과학성에 대한 기초자료를 얻고자 영남농업시험장 답작포장에서 1990년부터 1999년까지 10년간 시험을 수행하였다. 시험품종은 동해벼('90-'96), 금오벼2호, 화영벼('97-'98), 금오벼 1호, 영해벼('99)를, 작부방식은 벼 단작 만기직파와 보리후작 벼 직파를 하였고 보리후작 벼 직파는 보릿짚제거후 직파와 보릿짚 시용후 직파를 실시하였던 시험결과를 요약하면 다음과 같다. 1. 출아일수는 보리후작 건답직파는 8~9일로 벼단작 직파 9 일과 비슷하였고
Changes of rice yield and soil physicochemical properties of the dry-seeded rice-barley double cropping system were investigated for 10 years from 1990 to 1999. Generally, seedling stand was more unstable in the rice-barley cropping system regardless of barley straw addition or removal than in the rice single cultivation as indicated by higher standard deviation of seedling stand across year. Rice yield in rice-barley double cropping cultivation was increased due to barley straw application starting from the second year, recording 2 to 19% increase (average of 9% for 10 years) due to higher spikelet number. Protein content and Mg/K equivalent ratio were similiar among the barley straw applied field, rice single crop and barley straw removed plots. Also, amylose content was not significantly different among cropping patterns. Physicochemical properties of soil was improved by applying the barley straw; soil porosity was higher and content of organic matter and cation exchange capacity of Ca increased but those of Mg and K did not differ.