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为了研究齐齐哈尔城市绿地土壤肥力情况,试验采集齐齐哈尔市城市中心城区主要公园绿地、道路绿地、沿岸绿地、单位附属绿地、居住区绿地和生产绿地>0~≤10 cm、>10~≤20 cm和>20~≤30 cm土层土壤,研究土壤质地、容重、孔隙度、p H值、有机质、氮、磷、钾等物理化学性质。结果表明:表层土壤容重偏紧,土壤孔隙度偏高;土壤p H值以碱性为主;有机质处于中等偏下水平或低等水平;土壤速效氮含量处于较低水平;土壤全钾含量处于低等水平;几乎所有的土壤全磷含量都小于0.4 g/kg,处于低级水平。>0~≤10 cm土层土壤中有机质、全氮、速效钾、全钾和全磷都高于>10~≤20 cm和>20~≤30 cm土层。说明齐齐哈尔市城市绿地土壤以壤质土为主,缺乏有机质。
In order to study the situation of soil fertility in the urban greenbelt in Qiqihar City, the main park greenbelt, road greenbelt, coastal greenbelt, affiliated greenbelt, residential greenbelt and greenbelt in urban area of Qiqihar City were collected from 0 ~ ≤10 cm,> 10 ~ ≤20 cm and > 20 ~ ≤30 cm soils, the physicochemical properties of soil texture, bulk density, porosity, p H value, organic matter, nitrogen, phosphorus and potassium were studied. The results showed that the surface soil bulk density was tight and the soil porosity was high. The soil p H value was mainly alkaline, the organic matter was at the middle lower level or lower level, the soil available nitrogen was at a low level, Low level; Almost all of the soil total phosphorus content of less than 0.4 g / kg, at a low level. Soil organic matter, total nitrogen, available potassium, total potassium and total phosphorus> 0 ~ ≤10 cm soil layer were higher than> 10 ~ ≤20 cm and> 20 ~ ≤30 cm soil layer. This shows that the urban greenland soil in Qiqihar is dominated by loamy soil and lacks organic matter.