搜索结果: 1-3 共查到“农学总论 Middle”相关记录3条 . 查询时间(0.125 秒)
Energy balance of direct seeding applications used in wheat production in middle Anatolia
Direct seeding tillage system wheat energy balance energy input-output
2011/1/11
In the present study, which was conducted at Polatlı agricultural farms, three different applications were used for wheat production. These were conventional tillage, reduced tillage and direct s...
Natural and uselfulnes values of MEADOWS OF THE MIDDLE SECTION OF THE MOGILNICA RIVER VALLEY
Mogilnica River site meadows communities floristic diversity synanthropisation
2009/3/31
Natural importance and economical and usefulness values (FVS) of meadows situated in the valley of the central Mogilnica River were assessed. The natural value was determined on the basis of: the num...
pH of streams in western Finland - a perspective from the Middle Ages into the mid 21st century
acid sulphate soil hydrochemistry acidification ditching land us
2010/8/11
In the central parts of western Finland, many streams are severely acidified as a result of land-use activities on overburden (soils) capable of producing and ultimately releasing extreme acidity. Con...
