水样中总磷含量随着自然沉降时间的延长而逐渐降低。
The amount of total phosphorus in surface water declines gradually with the prolonging of static balance time.
地面水一般带色且浊，采用光度法分析水样中总磷时，会使测定结果偏高。
Surface water is generally coloured and turbid. When total phosphorus is analyzed by luminometer, the monitoring result will be somewhat high.
结果表明，径流中总磷的浓度以村庄最高，其次为坡耕地、林果地和荒草坡。
The results show that TP concentration in village runoff is highest, and then is in runoff from sloping cultivated land, orchard and forestland.
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