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黑土肥力高,地势较平坦,适于大面积机械化作业和多种作物生长.哈尔滨地区黑土基本可以代表黑龙江南部黑土,其自然特点是春季比较干旱、秋季多雨,形成春旱、秋涝的水分条件,加之土质比较粘重,常因水分养分失调严重影响作物的出苗、生长、延迟成熟期,从而使产量不高不稳.在这个地区土壤水分状况就成为限制作物高产稳产的关键.因此,研究本地区土壤水分状况、变化规律以及对作物养分供应的影响,对合理灌溉、施肥、定向培育高产黑土有重要意义.
Black soil fertility is high, flat topography, suitable for large-scale mechanized operations and a variety of crop growth. Black soil in Harbin can basically represent the black soil in the southern Heilongjiang Province, its natural characteristics are relatively dry in spring and rainy in autumn, forming spring drought, autumn water conditions , Coupled with the soil is relatively sticky, often due to moisture and nutrient imbalance seriously affect crop emergence, growth, delayed maturity, so that the yield is not high instability in the region soil moisture status has become the key to limiting crop high and stable yield.Therefore, research The status of soil moisture and its variation in the region as well as its impact on crop nutrient supply are of great significance to the cultivation of high-yielding black soil with reasonable irrigation, fertilization and orientation.