Nitrogen, potassium, phosphorus content with increasing soil depth is gradually reduced.
碱解氮、速效钾、速效磷含量随着土层深度的加深逐渐降低。
In soils with the same phosphorus levels, the contents of various forms of phosphorus were accumulated mainly in the profile of a surface layer and decreased gradually with the depth of the profile.
对于相同土壤磷水平的土壤，磷素在上层土壤积累量较大，随着土层深度的加深，磷素含量逐渐减小。
The results show that in-depth treatment process have good removal effect for the COD, BOD, total phosphorus, ammonia nitrogen, suspended particulate, turbidity, OIL and total iron of waste water.
结果表明：深度处理工艺对源污水中COD、BOD、总磷、氨氮、悬浮物、浊度、OIL、总铁等均有很好的去除效果。
As shown by the analysis, temperature and depth of water and total phosphorus are related fa...
分析结果表明，水温、水深和总磷为蓝藻生物量的显著相关因子。
As shown by the analysis, temperature and depth of water and total phosphorus are related fa...
分析结果表明，水温、水深和总磷为蓝藻生物量的显著相关因子。
应用推荐