Estimating soil salinity by disjunctive kriging

摘要: . Disjunctive kriging provides minimum variance estimates of properties from non-linear combinations spatially correlated sample data. In addition it can be used to estimate the conditional probability that some critical threshold is exceeded or there a deficit at unsampled points. The technique has been applied and map salinity soil in Bet Shean Valley Israel measurements electrical conductivity. November 1985 estimated conductivity 4 mS per centimetre throughout most region, only small area was less than 0.2. By March 1986 had declined everywhere centimetre, exceeding this value nowhere 0.25. Despite fluctuation farmers seem have under control. results suggest winter wheat likely germinate poorly saltier parts region lucerne (alfalfa, Medicago sativa) unlikely yield its maximum over it. Cotton, summer crop sown spring, should not suffer.