| 摘要 |
The present invention provides 1) a convenient and novel method for supplementing irrigation water to produce a compound fertilizer that takes into account ambient concentrations of one or more of the nutrients in the irrigation water; 2) a convenient and novel method of prescribing the constituents of compound fertilizers based on predetermined ratios between a desired final concentration of an index nutrient and a desired concentration of at least one non-index nutrient; and, 3) a convenient and novel method of formulating compound fertilizers by providing a graduated series of stocks that accommodate wide variation in ambient concentrations of an index nutrient in local irrigation waters.
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