Topdressing nitrogen treatment had no obvious effect to total nitrogen in soil, but it had a stronger effect to alkalined-nitrogen. 追氮處理對土壤全氮沒(méi)有明顯的影響，但對土壤大麥堿解氮的影響比較大。
In order to ease up overnutrition of water bodies, open up an economical and effectual technology of nitrogen removal is important to us. 為了緩解日益嚴重的水體富營(yíng)養化問(wèn)題，開(kāi)發(fā)一種經(jīng)濟有效的污水脫氮處理技術(shù)已成為水污染控制工程領(lǐng)域的重點(diǎn)與熱點(diǎn)。
