One avoid application of ammonium nitrate. Nitrate nitrogen is readily absorbed during the growth of fruit trees. If ammonium nitrate is applied after the application of ammonium nitrate, excessive consumption of nitrate ions in the fruit trees may cause accumulation of poisoning. Second bogey water application of ammonium bicarbonate. Ammonium carbonate is extremely unstable and volatile. Therefore, in the application of ammonium bicarbonate in fruit trees, whether as a basal fertilizer or top dressing, should be applied in the case of wet orchard, immediately after application. If the soil is particularly dry, it may be better to apply ammonium bicarbonate after watering. Three avoid repeated application of ammonium sulfate. In orchards from acidic soils to slightly alkaline soils, if ammonium sulfate is continuously applied. It will increase the acidity of the soil, and it will easily lead to soil compaction and affect root activity, which will cause poor growth of fruit trees, leading to a serious decline in yield and quality.
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