Four common unreasonable fertilization methods

Shallow application of fertilizer

Fertilizer is easy to volatilize, lose or difficult to reach the roots of crops, which is not conducive to crop absorption, resulting in low fertilizer use efficiency. Fertilizer should be applied 16-26 cm below the side of the seed or plant.

Improper application of chemical fertilizer to crops

May cause fertilizer damage, burning seedlings, plant wilting and other phenomena. Excessive application of nitrogen fertilizer, there are a large number of ammonia or ammonium ions in the soil. On the one hand, ammonia volatilizes and forms alkaline water droplets in the air, which burns crops and produces scorched spots on leaves; on the other hand, ammonium ions are nitrified on dry soil and transformed into ammonium nitrite under the action of nitrifying bacteria. Nitrogen dioxide gas produced by gasification will poison crops, irregular water-immersed spots appear on crop leaves, and leaf veins gradually whiten.

Excessive use of certain nutritious fertilizers

It will not only be toxic to crops, but also hinder the absorption of other nutrients by crops and cause deficiency.

Fresh human feces and urine are directly applied to vegetables

Fresh human feces and urine contain a large number of bacteria, toxins and parasite eggs, if directly applied without ripening, it will pollute vegetables and easily spread diseases, which can only be applied after high temperature composting fermentation or harmless treatment.