What are the principles of mixed fertilizer application? Explained clearly in one article
Implement in accordance with the provisions of NY/T 496-2002. The fertilizers used should be those already registered or exempt from registration with the agricultural administrative department. Restrict the use of chlorine-containing compound fertilizers. Permitted fertilizer types: organic fertilizers include compost, waterlogged compost, barnyard manure, biogas fertilizer, green manure, crop straw fertilizer, peat fertilizer, cake...
Precautions for mixed applicationSo-called mixed fertilizer application means that according to soil conditions, crop growth needs, and nutrient supply conditions, two or more fertilizers with different properties and different effects, such as nitrogen, phosphorus, and potassium chemical fertilizers, or quick-acting fertilizers and slow-acting fertilizers, or organic fertilizers and inorganic fertilizers, trace element fertilizers and growth hormones, etc., are mixed together for application.
The main principles of mixed use
Mixing fertilizers includes mixed application among trace element fertilizers and between trace element fertilizers and commonly used chemical fertilizers, and the following principles must be followed: (1) Mixed application must be strongly targeted and must suit the needs of crop nutrition and soil fertility conditions; (2) After mixing, it must achieve a mutually reinforcing effect and improve the physical properties of the fertilizer; (3) It must help mutually increase efficiency, must not reduce the fertilizer efficiency of any one of them, and truly achieve the expected "one application, multiple effects."
(1) Zinc fertilizer should not be mixed with strongly alkaline fertilizers such as ammonia water, and preferably should not be mixed with soluble phosphorus fertilizers such as superphosphate, so as to avoid forming zinc phosphate precipitate and reducing fertilizer efficiency; (2) When trace element fertilizers are mixed for application, the concentration and amount should not exceed the specified amount, otherwise the seeds after seed soaking or seed dressing will not sprout, while foliar spraying will cause damage such as seedling burn; trace element fertilizers should preferably not be mixed with plant ash; (4) When various trace element fertilizers are mixed with soil and miscellaneous manure, attention should be paid to gradual dilution and thorough mixing; it is best to first mix them evenly with a small amount of fine soil and then fully mix them together with the soil and miscellaneous manure; (5) When trace element fertilizers are sprayed after being diluted with water, or mixed with manure water, they should first be dissolved in a small amount of water, then added to clear water or manure water and fully stirred before application, so as to avoid causing seed burn or seedling burn.