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The Mechanism and Mesures for Surface and Subsurface Drainage of the Agricultural Land by the Field Reclamation at Improved Slope in Volcanic Ash Soil, Snowy, High and Cold Areas

火山灰土、雪天高寒地区改良坡地开垦农田地表和地下排水的机理和措施

基本信息

批准号：
60420049
负责人：
AKIRA NAGASAKI
金额：
$ 8.51万
依托单位：
Niigata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1985
资助国家：
日本
起止时间：
1985 至 1988
项目状态：
已结题

项目摘要

The authors had observed and analyzed in the experimental field of Niigata Prefecture, Tsunan-Machi (volcanic ash soil, snowy, high and cold areas) by the automatic observation facilities system in the past four years, as to surface and subsurface drainage discharge, groundwater table, soil moisture content, soil hardness, pF (soil moistrue suction), etc. As the sesult of comparative study between before and after operation drainage, it is known that the subsurface drainage is effective for the prevent of soil erosion, the conservation of slope, the drying of surface soil in the reclaimed agricultural land by the field reclamation at improved slope in volcanic ash soil, snowy, high and cold areas.

笔者近四年来，利用自动观测设施系统，在新泻县津南町（火山灰土、雪域、高寒地区）试验场，对地表及地下排水流量、地下水位、土壤含水量、土壤硬度、pF（土壤吸湿力）等进行了观测分析。众所周知，在火山灰土、雪天、高寒地区改良坡地开垦后，地下排水对防止水土流失、保护坡面、干燥农田表层土壤具有有效的作用。