The effects of planting density and nitrogen application rate on nitrogen absorption and utilization by rice were studied with Wuxiangjing 9(Japonica variety).
以迟熟中粳稻武香粳9号为材料，研究了基本苗和施氮量对水稻氮素吸收与利用的影响。
The absorption factor and absorption rate of nitrogen were analyzed.
分析了影响氮的吸收因素和氮的吸收率。
As a result Iris pseudacorus has the biggest absorption contribution rate for removing nitrogen and phosphorus from the secondary effluent from April to October, which gets 30% and 73% respectively.
采用室内试验和现场试验考察了黄花鸢尾、水葱和梭鱼草3种挺水植物对类污水处理厂二级出水中氮、磷的吸收速率、吸收容量和吸收贡献。
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