Effect of ammonium nitrogen on the growth,biochemical constitutes and toxin production of Microcystis aeroginosa FACHB905;

Sensitive spectrofluorimetric method for determination of low concentration ammonium in seawater;

Under watersaving irrigation condition, the ammonium N and nitrate N content dynamic distributions in the soil protile are measured during winter wheat growing period, the transportation and transformation of nitrogen in the wheat root zone take nitrate N as dominant, being about 85% of the total nitrogen.

This paper deals with the research on ammonia nitrogen adsorption of Nanyang medical stone pre-and post-modified by inorganic and organic salt solution with ammonium sulfate solution as the adsorption reagent.

This paper reviews on the influence of concentration and amount of the acid and alkali,processing time,temperature and heat treatment time on the Nanyang medical stone in the adsorption of ammonia nitrogen in ammonium sulfate.

The comparative analysis of ammonium nitrogen and rapidly available potassium between meadow soil and yellow red soil of Mount Wuyi;

The response of dry matter accumulation,turgor pressure and photosynthetic rate in cucumber seedlings to nitrate and ammonium nitrogen;

Effects of different proportions of ammonium nitrogen and nitric nitrogen on the yield and quality of the tobacco;