摘要
对山东棕壤、褐土及潮土类土壤中有机磷素状况进行了分析测定。结果表明,潮土类土壤中有机磷平均含量为64ppm-P,占土壤有机质的0.65％,占土壤全磷量的7.6％,有机磷和全磷与速效磷含量间存在极为显著的正相关关系。棕壤和褐土类土壤中,有机磷平均含量分别为88.1ppm-P和148.0ppm-P,各占有机质的0.81％和0.64％,占全磷量的24.9％和30.2％。各类土壤中均随着土壤有机质含量水平的提高,有机磷含量相应增加,二者呈极显著的正相关关系。但土壤速效磷并不因为有机磷的增加而增加。增施有机肥料,提高土壤有机质水平,也是提高土壤磷素肥力的重要途径。
The state of organic phosphorus in brown earth, cinnamon soil and flovo-aquic soil were studied. The results showed that soil organic phosphorus was indispensable for plant phosphorus nutrition. The organic phosphorus and total phosphorus were significantly positive correlated with available phosphorus in flovo-aquic soil. There was not significant correlation between available phosphorus and organic phosphorus but there were significantly positive correlation between organic matter and organic phosphorus in brownearth and cinnamon soils. It is important to add organic manure into soil for improving soil phosphorus fertility.
出处
《莱阳农学院学报》
1990年第4期270-273,共4页
Journal of Laiyang Agricultural College
关键词
土壤有机磷
棕壤
褐土
潮土
soil organic phosphorus
organic matter
brown earth
cinnamon soil
flovo—aquic soil.
