본 연구에서는 작업기의 디스크 헤로우를 이송장치에 부착하여 실내실험을 통해 토양의 물리적 특성(함수율, 단위중량), 작업기의 특성(주행속도, 디스크 헤로우 간의 간격)에 따른 경운 토양의 반전율 등을 분석하고자 하며, 작업시기의 적정 토양의 물리적 상태를 확인하여 농가의 기초자료로 활용하고자 한다. 실험은 4가지 변수를 두고 진행하였다. 함수율, 작업 속도는 3가지 조건으로, 단위 중량은 일반적인 밭 흙 단위 중량 2.3kg/m³을 기준으로 높을 때와 낮을 때로 구분 지었으며, 디스크 헤로우의 간격은 30cm, 40cm로 구분하여 실험을 진행하였다. 이러한 4가지 변수를 두고 실험을 실시할 때 똑같은 조건으로 산포하기 위해 1m x 1m 면적의 프레임을 제작하여 일정하게 3회 석회가루를 산포하고, 경운 작업 전?후의 석회가루 분포를 측정하여 반전율을 계산하였다. 반전율은 함수율별 분석 시 25%, 15%, 30% 순으로 측정되었고, 디스크 헤로우의 간격은 30cm 일 때가 더 높게 측정되었으며, 토양의 단위중량은 2.3kg/m³ 이상일 때 더 높게 측정되었다.
본 연구에서는 작업기의 디스크 헤로우를 이송장치에 부착하여 실내실험을 통해 토양의 물리적 특성(함수율, 단위중량), 작업기의 특성(주행속도, 디스크 헤로우 간의 간격)에 따른 경운 토양의 반전율 등을 분석하고자 하며, 작업시기의 적정 토양의 물리적 상태를 확인하여 농가의 기초자료로 활용하고자 한다. 실험은 4가지 변수를 두고 진행하였다. 함수율, 작업 속도는 3가지 조건으로, 단위 중량은 일반적인 밭 흙 단위 중량 2.3kg/m³을 기준으로 높을 때와 낮을 때로 구분 지었으며, 디스크 헤로우의 간격은 30cm, 40cm로 구분하여 실험을 진행하였다. 이러한 4가지 변수를 두고 실험을 실시할 때 똑같은 조건으로 산포하기 위해 1m x 1m 면적의 프레임을 제작하여 일정하게 3회 석회가루를 산포하고, 경운 작업 전?후의 석회가루 분포를 측정하여 반전율을 계산하였다. 반전율은 함수율별 분석 시 25%, 15%, 30% 순으로 측정되었고, 디스크 헤로우의 간격은 30cm 일 때가 더 높게 측정되었으며, 토양의 단위중량은 2.3kg/m³ 이상일 때 더 높게 측정되었다.
In this paper, the inversion ratio of tilled soil depending on physical properties of soil, such as moisture content(MC), and unit weight(UW) and mechanical characteristics of harrow machinery, such as running speed(RS) and distance between harrows(DBH), was analyzed as a basic data for intensive a...
In this paper, the inversion ratio of tilled soil depending on physical properties of soil, such as moisture content(MC), and unit weight(UW) and mechanical characteristics of harrow machinery, such as running speed(RS) and distance between harrows(DBH), was analyzed as a basic data for intensive agriculture. Four factors were concerned as an experimental condition, which consisted of three or two sub-conditions, such as MC(15%, 25%, and 30%), RS(0.2 m/min, 0.4m/min, and 0.6m/min), UW(above 2.3 kg/m³ and below 2.3 kg/m³) and DBH(30 cm and 40 cm). In order to analyze the inversion ratio, a lime powder uniformly covered on the soil(1 m×1 m), then the ratio was calculated before and after harrowing using the inverted powder. As a result, the higher inversion ratio was generally achieved at 25% of MC, 30cm of DBH, and above 2.3 kg/m³ of UW.
In this paper, the inversion ratio of tilled soil depending on physical properties of soil, such as moisture content(MC), and unit weight(UW) and mechanical characteristics of harrow machinery, such as running speed(RS) and distance between harrows(DBH), was analyzed as a basic data for intensive agriculture. Four factors were concerned as an experimental condition, which consisted of three or two sub-conditions, such as MC(15%, 25%, and 30%), RS(0.2 m/min, 0.4m/min, and 0.6m/min), UW(above 2.3 kg/m³ and below 2.3 kg/m³) and DBH(30 cm and 40 cm). In order to analyze the inversion ratio, a lime powder uniformly covered on the soil(1 m×1 m), then the ratio was calculated before and after harrowing using the inverted powder. As a result, the higher inversion ratio was generally achieved at 25% of MC, 30cm of DBH, and above 2.3 kg/m³ of UW.
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