If there is a strong pungent ammonia flavor of the liquid is ammonia; obvious pungent ammonia flavor particles are ammonium bicarbonate; fine sour powder is heavy superphosphate. If superphosphate has a very pungent sour taste, it is very likely that spent sulfuric acid is used in the production process. This fertilizer is very toxic and can easily damage or burn crops, especially in rice ponds.
What needs to be reminded is that although some chemical fertilizers are true, their content is very low, such as inferior superphosphate, and the effective phosphorus content is less than 8% (the minimum standard should reach 12%). These chemical fertilizers are poor quality chemical fertilizers and have little effect on fertilizers. Professionals should be identified when purchasing them.
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