千葉大学松戸キャンパスに設置した県内土壌充填コンクリート枠試験の概要および千葉県暖地園芸研究所内の土壌調査

Field exhibitions of typical soils from Chiba Prefecture in concrete frames at Matsudo Campus and soil investigation in Warm Horticulture Research Institute, Chiba Prefecture

[ABSTRACT] The concrete frame experiment set up in the field of Matsudo Campus, Chiba University in 1989, being filled with six kinds of typical soils of Chiba prefecture. This experiment setting has been used as a platform for education and research in the Faculty of Horticulture. However, soil depth had decreased over 20 years. We decided to refill the frames with new soils and recover their original depths. The six types of soil were sand-dune Regosol, Brown Forest Soil, Dark Red Soil, humic Andosol, and light-colored Andosol（ surface and subsurface）. Sand-dune Regosol had a high density and a high pH. The soil densities of Andosols were relatively low, and their phosphate absorption coefficient exceeded 2000 mgP2O5 100g－1, indicating the typical characteristics of Andosols. The lightcolored Andosol（ surface） had the highest CEC value, followed by Brown Forest Soil, Andosol（ subsurface）, and humic Andosol. Clay content and total carbon content were related with CEC. A soil survey of the Biwa garden soil of the Warm Land Research Institute, where brown forest soil was collected, revealed that although the amount of CO2 released from the soil surface and the A1 layer was large, the amount of CO2 produced in cores in A2, Bw1, and Bw2 were not negligible, and these soils had significant amount of microbial biomass. This result suggests that the effect of the lower soil in orchard soils play important roles in carbon cycle.

https://opac.ll.chiba-u.jp/da/curator/900121134/

https://opac.ll.chiba-u.jp/da/curator/900121134/S18808824-77-001A.pdf

千葉大学大学院園芸学研究科

Chiba University. Graduate school of Horticulture

紀要論文

1880-8824

AA12123127

食と緑の科学 = HortResearch

77

001A

2022-12-19

10.20776/S18808824-77-001A

publisher

食と緑の科学