A field experiment in irrigation, the amount of nitrogen (N), the amount of potassium (K2O) of the test factor, three-level five factors quadratic rotation Design
Through field experiments, the three-factor five-level two-purpose rotation combination is used to test the amount of water, nitrogen (N) and potassium cast (K2O) as the experimental factors.
Field experiments were conducted to study the effects of irrigation, nitrogen and potassium application on the design of quadratic general rotation combination with three factors and five levels.<br>