Several common chemical fertilizer identification methods

Simple identification of chemical fertilizers 1. Physical methods: (1) look at (state, color): liquid fertilizer is **; off-white powder fertilizer is phosphate fertilizer; (2) smell (odor): solid with strong ammonia odor is ammonium bicarbonate; (3) dissolved (Water-soluble): Potash and nitrogen fertilizers are soluble in water, and most of them are insoluble or partially soluble in water.

2. Chemical methods: (4) Burning: Potash can not be burned, beating or having cracking sound Nitrogen can be burned, foamed or smoked by melting; (5) Reaction (added slaked lime): Ammonium nitrogen fertilizer can release gas with pungent odor;

If it is a fruit tree, it is recommended to use more organic manure instead of organic manure. Now organic manure is dried chicken, duck and manure, so it is better to buy fermented food. Then choose according to the growing trend, high nitrogen and potassium fertilizer, or buy urea, superphosphate, **potassium, mix by yourself. It is recommended that potassium and potassium be used in fruits and vegetables. Do not use potassium chloride because potassium chloride affects fruit and vegetable quality. Vegetables, especially greenhouse vegetables, are recommended to use large amounts of water-soluble fertilizers. Although the price of water-soluble fertilizers is high, they are very effective. Farmers crops, wheat, and corn are still dominated by high-nitrogen, high-potassium compound fertilizers.