Comparison of the Surface Chemical Properties of Plastic Film House, Upland, and Orchard Soils in Gyeongbuk Province

Abstract

The objectives of this study were to evaluate the soil fertility about plastic film house, upland, and orchard in Gyeongbuk Province, Korea. The surface chemical properties of soil samples were investigated every 4 year from 2000 year at upland, 2001 year at orchard, and 2002 year at plastic film house. During 12 year's monitoring, mean soil pH was increased by 0.7 and 0.8 pH unit from pH 5.7 in upland and orchard, respectively, 0.5 pH unit from pH 6.5 in plastic film house. About 50% of all the field samples occupied within the recommended pH range (pH 6-7). Although soil organic matter (SOM) was gradually increased by about 10 g kg -1 for 12 years, 40% of orchard, 49% of plastic film house, and 77% of upland soil samples were still below the 3% SOM. The mean concentration of available phosphate for 12 years in upland, orchard, and plastic film house were 530, 600, and 760 mg kg -1, respectively. The relative frequencies exceeding the recommended available phosphate range (300-550 mg kg -1) were 43%, 53%, and 66% at upland, orchard, and plastic film house soils, respectively. NH 4 OAc exchangeable K + of upland, orchard, and plastic film house in the last soil test were 0.8, 0.9, and 1.6 cmol c kg -1 , respectively. The relative frequencies above the recommended K level were 56% and 70% of orchard and plastic film house soil samples, respectively. The levels of crop nutrients except exchangeable Ca and Mg in upland soil were tended to increase gradually in the three fields. Exchangeable Mg, EC, available phosphate, organic matter and soil pH could be used as principle components to differentiate the chemical properties of three land fields. This analysis revealed that the soil fertility was affected by cropping method and field management, although additional research is needed to assess the importance of management on soil chemical properties and many fields indicate an opportunity for improvement in fertilizer management.

Changes in Chemical Properties of Greenhouse Soils Collected from Ganghwa

“…고도의 정의 상관을 나타냈다. 유기물과 유효인산 간의 상관정도가 높은 것은 논과 밭 조건 모두에서 공통적으로 나타 나는 현상으로, 퇴비의 사용과 연관이 있는 것으로 생각된다 (Park et al, 2016;Park et al, 2017). 치환성 양이온 간에 는 고도의 정의 상관을 보였으며, 특히 치환성 칼슘과 마그네슘은 r = 0.78의 상관관계를 나타냈다.…”

Changes in Soil Chemical Properties of Rice Paddy, Upland Field, and Greenhouse in Incheon from 2015 to 2019

“…토양의 화학성은 작물의 생산성과 유의하게 상관되어 있으며 (Yamagishi et al, 2003), 벼의 경우, 토양의 화학적 특성이 생산량과 품질에 중요한 역할을 하는 것으로 알려져 있다 (Yanai et al, 2001) 전국의 논 (Kang et al, 2012), 밭 (Kim et al, 2019) 및 시설재배지 (Kang et al, 2013) 토양의 화학성 변동에 대한 보고를 보면, 화학성분에 따라 적정범위보다 부족하거나 과다한 농경지의 분포비율이 상당히 높았고, 경북지역의 경 우, 시설하우스의 70%가 치환성 양이온K의 함량이 추천수준을 초과한 것으로 보고되었다 (Park et al, 2016). 특히 시설재배지 토양은 염류가 과다하게 집적되어 있으며, 재배년수가 늘어남에 따라 토양의 염류 집적량도 계속 늘어나 는 추세에 있다고 보고되었다 (Ha et al, 1997).…”

Status and Changes in Chemical Properties of Orchard Soils in Gangwon State

“…Ahn et al (2011)은 전북지역 과수원 토양의 pH와 유기물은 적정 수준을 보였지만, 유효인산과 교환성 칼륨, 칼슘 은 적정 수준보다 높아 적절한 양분관리가 필요하다고 하였다. 경북지역의 과수원 토양은 pH와 유기물, 유효인산이 증가하는 경향을 나타내었다 (Park et al, 2016).…”