title: [A conjecture on the fertilizer recovery measurement by field experiment].
abstract: The measurement of fertilizer recovery either by isotope tracer technique or by field experiment with plots fertilized and unfertilized, both were suspected unreliable and reasons were discussed. Based on some reasonable presumptions, an alternative way of estimating fertilizer recovery by field trials was proposed in this paper, but further examination on it's reliability is needed.
authors.affiliation: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China.
authors.forename: Shanmin
authors.initials: S
authors.lastname: Shen
mesh_terms: D000383:Agriculture; D005308:Fertilizers; D008433:Mathematics
chemical_list: D005308:Fertilizers