
%0 Journal Article
%A Zhuang, S. Y. 
%A Yin, B. 
%A Zhu, Z. L. 
%T Simulating the effectiveness of surface film on water evaporation and ammonia volatilisation
%J Soil Research
%D 2002/10/31
%V 40
%N 7
%P 1243-1248
%K half-life, logistic equation
%R https://doi.org/10.1071/SR01027
%U https://www.publish.csiro.au/paper/SR01027 
%X The application of surface films to flooded rice fields is one of the most effective measures of controlling ammonia volatilisation for improving nitrogen use efficiency. The feasibility of using a surface film is determined to some extent by the longevity of the effectiveness and this has never been estimated accurately in the field. The concept of half-life was introduced to estimate the effective life of a surface film by calculation from its effect on water evaporation. A simple laboratory experiment was carried out to validate the usefulness of the half-life concept. The results showed that effects on ammonia volatilisation could be quantified using a logistic equation based on the half-life concept. 
