Well water contains more minerals such as calcium and magnesium. If well water containing high calcium and magnesium is used to dilute the dimethoate, marathon, killer, trichlorfon, methamidophos, and other EC pesticides, calcium, magnesium and other substances in the well water are easily combined with the EC in pesticides. Precipitates are produced, which can destroy the emulsifying properties of pesticides and reduce the use of pesticides. If well water containing calcium and magnesium is used to dilute wettable powder pesticides such as fast-killing and leaf-dried powder, the uniformity of the liquid medicine will be reduced, and the control effect will also be affected. Therefore, when diluting pesticides, it is not appropriate to use well water, but use river water, pond water, lake water and clean paddy field water. Diluting the pesticide with water with low content of calcium and magnesium substances can ensure the use effect of pesticides. China Agricultural Network Editor
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