N P K fertilizer是什么意思

用法例句

Characteristics on nitrogen and phosphorus losses in the typical small watershed of the Three Georges Reservoir area;

三峡库区典型小流域氮磷流失特征

Effect of aeration on release of nitrogen and phosphorus from sediments in eutrophic waterbody;

曝气复氧对富营养化水体底泥氮磷释放的影响

Advance in biogeochemistry studies on nitrogen and phosphorus in offshore sediment;

近海沉积物中氮磷的生物地球化学研究进展

Effect of inorganic salt modification on zeolite barriers to control phosphorus and nitrogen release from sediments;

无机盐改性对沸石覆盖技术控制底泥氮磷释放的影响研究

A novel compound barrier constructed with HCl modification zeolite and calcite was reported to control phosphorus and nitrogen release from sediments.

提出了HCl改性沸石和方解石复合覆盖控制底泥氮磷释放的新方法,利用摇床振荡试验和底泥氮磷释放控制模拟试验,设计了5种底泥处理方案,重点针对HCl改性沸石和方解石复合覆盖技术研究了其抑制底泥氮磷释放的效果及机理。

Efficiency and mechanics of compound barrier with calcite and zeolite to immobilize phosphorus and nitrogen release from sediments were researched.

通过模拟试验,研究了沸石和方解石复合覆盖层控制底泥氮磷释放的效果及机理。

A water quality model of non-conservative substances, including nitrogen,phosphorus,phytoplankton and zooplankton is established,which takes into consideration the physical and biochemical processes related to nitrogen and phosphorus.

考虑了近岸海域影响氮、磷含量、时空分布的主要物理、生物化学过程,建立了胶州湾海域非保守物质(氮、磷)的水质预测模型。

The pollution situation of nitrogen and phosphorus in rural water environment in typical region of Tai Lake was studied by determining the contents of total-phosphorus,nitrate nitrogen and ammonium nitrogen 6 times during a year in rural water body of Tai-lake typical region(Yixing,Wangzhuang and Xinzhuang).

结果表明,一年中的丰水期(5至9月),农田各个水体中氮、磷含量明显高于其他时期;地表水中NH+4-N含量较高,地下水中NO3--N含量也偏高。

The removal efficiencies of nitrogen and phosphorus by four experimental small-scale integrated systems of constructed (wetland) and oxidation pond, consisting of horizontal-flow wetland, vertical wetland or oxidization pond, were compared.

本文在小试规模上,研究了下行流湿地、推流床湿地、氧化塘和兼性塘四种处理单元的四种工艺组合对氮、磷的去除效果,研究结果表明:下行流湿地+氧化塘工艺组合具有较好的充氧效果,推流床湿地后置也可以提高出水的溶解氧。

Effect of Pig Manure and Chemical Fertilizer Application on Dynamics of N and P in Floodwater of Paddy Soils;

施用猪粪和化肥对稻田土壤表面水氮磷动态的影响

The Effects of Fertilizer N and P on Nitrate Accumulation in Dian Lake Drainage Area under Protection;

滇池流域设施条件下氮磷对土壤硝酸盐累积的影响