Phosphorus fractions could enter water body from surface runoff and leachate due to excessive irrigation of centralized farm wastewater.
养殖场污水田间处理会引起土壤表面径流和渗出液中的磷组分流失。
Incubation and pot experiments were carried out to study the effects of organic manures on soil organic phosphorus fractions and their bio-availability.
通过培养与盆栽试验，研究了有机肥料对土壤有机磷组分及其生物有效性的影响。
Soil incubation was carried out to study the effects of soil organic phosphorus fractions and quantity in different periods after application of outside source of phytase.
研究了长期施肥对土壤全磷、有效磷年份变化和剖面磷组分、土壤对磷吸附解吸性能、土壤需磷指数等方面的影响。
The influence of several fertilizer structures on phosphorus supplying power and organic phosphorus fractions of the paddy soil in the southeastern area of Hubei province was studied.
本文研究了几种肥料结构对鄂东南水稻土磷素供应能力和有机磷组分的影响。
The result indicated: (1) Application of inorganic phosphorus fertilizer increased contents of all Pi fractions in soils.
结果表明：(1)施用无机磷肥能够提高土壤无机磷各组分含量。
The fractions and distribution of bioavailable phosphorus in river sediments were studied in order to identify the trophic level of inflow rivers to the west of Taihu Lake.
为了解太湖入湖河道的营养状况，研究了太湖西部河流沉积物生物利用磷的组成与分布。
The fractions and distribution of bioavailable phosphorus in river sediments were studied in order to identify the trophic level of inflow rivers to the west of Taihu Lake.
为了解太湖入湖河道的营养状况，研究了太湖西部河流沉积物生物利用磷的组成与分布。
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