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廊坊地区北部是燕山丘陵、山麓平原,往南为海河水系冲积而成的低平原。成土母质除丘陵区的残积、坡积物,山麓平原的洪积冲积物外,广阔的低平原则为冲积物及洼淀的静水沉积物。全区主要分布有地带性的褐土、泛域性的潮土、沼泽土、永定河故道区的风沙土。本文就廊坊地区土壤磷素及其转化谈一点看法。一:土壤全磷量。全磷是指土壤中所含磷素的总和,包括有效磷和植物不能直接吸
Langfang region is the northern Yanshan hills, foothills plain, south of the Haihe River alluvial low plains. In addition to the soil parent material in the hilly area of residual sediment, alluvial alluvial foothills, the vast low-lying alluvial deposits and hydrological sediments. The region is mainly distributed in the belt of cinnamon, pan-regional Chao soil, swamp soil, the Yongding River area of the sand area. This article on the Langfang area of soil phosphorus and conversion point of view. A: total phosphorus content of soil. Total phosphorus refers to the total amount of phosphorus contained in the soil, including available phosphorus and plants that can not be directly absorbed