Although the production of vegetables requires zinc supplementation, it does not mean that the more zinc fertilizer is used, the better. Vegetable farmers must add an appropriate amount of zinc fertilizer to vegetables. What problems should be paid attention to when supplementing zinc fertilizer with vegetables? Here are some precautions for zinc supplementation for vegetables.
Do not overdo it
The reason why zinc fertilizer is micro-fertilizer is that the crop requires less of it. Excessive application will have a toxic effect on the crop. (Zinc sulfate reached 250 grams). Lead to crop growth stagnation, small and thin leaves, affecting normal photosynthesis.
Do not apply continuously in base fertilizer
Zinc fertilizer is generally used as a base fertilizer for a long period of time. It can be applied once and can last for 1-2 years. In addition to severe zinc deficiency soils, zinc fertilizers are recommended to be applied once a year. However, in actual production, vegetable farmers will apply zinc fertilizer at the bottom before planting each stubble of vegetables. As a result, zinc fertilizer is applied twice in a year, which makes the amount of residual zinc fertilizer in the soil too large, and inhibits soil absorption of other elements.
Do not mix with alkaline fertilizers and pesticides
When zinc is mixed with alkaline fertilizer, it will react and reduce fertilizer efficiency. Similarly, when zinc is mixed with alkaline pesticides, the effectiveness and pesticide efficacy of zinc also decreases. In addition, if zinc fertilizer is mixed with phosphate fertilizer, it will easily form zinc phosphate precipitation, which will not only reduce the effectiveness of zinc, but also reduce the fertilizer efficiency of phosphorus, so the two should not be used at the same time.
Therefore, when zinc fertilizer is used as the base fertilizer, whether it is a large crop of vegetables or a cultivation of more than one year, it can be applied once a year. Depending on the degree of zinc deficiency in the soil, 0.5-2 kg of zinc sulfate per acre is used as the base fertilizer. For top dressing, use 0.75-1 kg of zinc sulfate per acre mixed with an appropriate amount of fine soil; foliar spraying, 90-180 g of zinc sulfate per acre and 60 kg of water per acre are sprayed on sunny days. When used, it is best to use it alone, so as not to react with other chemical fertilizers and affect the absorption of zinc by crops.
The above is the introduction of zinc fertilizer supplements for vegetables. When friends of vegetable farmers add zinc fertilizer to vegetables, they must pay attention to these issues and pay attention to scientific methods and methods.
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