Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
권호 표지

Effect of Band Spotty Fertilization for Reduction of Nitrogen Fertilizer on Chinese Cabbage(Brassia campestris L.) in Plastic Film Mulching Cultivation

비닐피복 배추 재배시 국소시비에 의한 질소질비료의 절감 효과

  • Received : 2005.11.03
  • Accepted : 2006.01.07
  • Published : 2006.04.30
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Abstract

This study was conducted to establish a low-input fertilization technique and increase of fertilization efficiency using the band spotty applicator(1999-2000) during the cultivation of mulching for chinese cabbage(Brassia campestris L.). The obtained results such as nitrogen efficiency, yield and soil improvement after cultivation of chinese cabbage were as follows. The content of $NO_3-N$ in soil increased in band spotty fertilization(BSF) by increasing application rate from the beginning stage to the middle stage. The content of total nitrogen increased but content of organic matter, available phosphate and exchangeable potassium decreased in comparison with the soil before experiment. Growth rate of Chinese cabbage increased in band spotty fertilization plot and uptake amount of nitrogen fertilized for chinese cabbage increased by increasing of the application rate. N use efficiency was higher by 5-21% in band spotty fertilization plot than in conventional fertilization(CF) plot. Yield of chinese cabbage increased by 16% in 70% band spotty fertilization plot and increased by 20% in 100% band spotty fertilization plot. It was found that 70% band spotty fertilization was more effective as fertilization method to reduce both environmental pollution and chemical nitrogen fertilizer in plastic film mulching cultivation.

밭작물의 시비효율 증대 및 생력시비기술 확립을 위하여 토중시비기를 개발하고 비닐피복 후 배추 가락신 1호를 재배하여 시비간격 30 cm, 시비 깊이 15 cm로 토중시비시 토양화학성 변화, 양분흡수량 및 이용률, 작물의 생육과 수량성을 검토한 결과는 다음과 같다. 토양 중 질산태질소 함량은 생육초기에서 중기까지 토중시비구에서 질소 시비수준이 높을수록 증가하였고 시험 후 토양은 토중시비에서 총질소 함량은 토중시비에서 증가한 반면 유기물, 유효인산 및 치환성 칼륨 함량은 비슷하였다. 배추의 생장속도는 파종 후 65일에 토중시비 100% 구, 70% 구에서 높게 증가되었고 시비질소 흡수량은 토중시비에서 질소 시비수준이 높을수록 많았고 질소 이용률은 관행시비(33.5%)에 비하여 토중시비에서 15-21% 높았다. 토중시비 70%구와 100%구는 질소시비효율을 증대 시켰을 뿐만 아니라 수량도 관행시비($109Mg\;ha^{-1}$)에 비하여 16-20% 증수되었고 소득이 18-22%나 증가되었다. 결론적으로 질소비료를 30% 절감한 토중시비를 추천할 수 있는 시비방법이라고 판단되었다.

Keywords

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