1. Ammonium nitrogen fertilizer should not be mixed with alkaline fertilizers. If mixed application will produce ammonia volatilization, resulting in loss of nitrogen, reducing fertilizer efficiency. The commonly used ammonium nitrogen fertilizers include ammonium bicarbonate, ammonium sulfate, ammonium chloride, ammonium phosphate, etc. The alkaline fertilizers include steel slag phosphate fertilizer, lime nitrogen, lime, and ash. 2, fast-acting phosphate fertilizer should not be mixed with alkaline fertilizers. Quick-acting phosphate fertilizers such as superphosphate, heavy superphosphate, and alkaline fertilizers can cause phosphate degradation, reduce the content of water-soluble phosphorus, and reduce phosphate fertilizer efficiency. 3, nitrate nitrogen fertilizer should not be mixed with organic fertilizer. Organic manure contains more organic matter. When nitrate nitrogen is treated, denitrification will occur under the action of denitrifying bacteria, causing loss of nitrogen. The commonly used nitrate nitrogen fertilizers include ammonium nitrate, sodium nitrate, and calcium ammonium nitrate. 4, decomposed organic fertilizer should not be mixed with alkaline fertilizers. All kinds of organic fertilizers with high maturity contain more available nutrients, of which nitrogen is mostly in the form of ammonium nitrogen. If mixed with alkaline fertilizers, it will cause the volatilization of ammonia and reduce the nutrient content of organic fertilizers. 5, mineral nitrogen fertilizer should not be mixed with the unrefined organic fertilizer. The unripe organic fertilizer contains a large amount of cellulose, less carbon and more nitrogen, and the microorganisms decompose cellulose while absorbing a large amount of mineral nitrogen, converting inorganic nitrogen into organic nitrogen, and delaying the effect of nitrogen fertilizer. Therefore, fresh organic fertilizer containing more cellulose is best not to be directly mixed with mineral nitrogen fertilizer. Generally need to stack maturity and then mixed with mineral nitrogen fertilizer application. Fertilizer warning plate iron fertilizer should not be applied to the soil. Iron fertilizers are easily fixed by soil and converted into insoluble compounds to promote fertilizer efficiency. Should be used foliar spray, such as 0.2% to 0.5% of ferrous sulfate on the leaves of fruit spray can prevent iron deficiency. Nitrate nitrogen fertilizer should not be applied in rice fields. Nitrate ions dissociated by ammonium nitrate, potassium nitrate, sodium nitrate, etc. are easily leached by the water to the deep soil layer in the paddy field, resulting in denitrification and loss of nitrogen. The use of nitrate nitrogen fertilizers in drylands is also forbidden to pour large water after heavy rain or after application. China Agricultural Network Editor
Width:250mm*Length:1800m*Thickness:25um
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