Zinc is one of the trace elements necessary for the growth and development of vegetables, and many vegetables have obvious effect of increasing zinc production. Cauliflower, beets, spinach, Chinese cabbage, tomatoes, eggplants, radishes, onions, and legumes are all hi-zinc vegetables. Applying zinc fertilizer can increase yield and improve quality. According to experiments, applying zinc fertilizer on tomatoes, cucumbers, and radish can increase production by 13%-15%. The method for applying zinc fertilizer to vegetables is as follows: 1. The main species used as base fertilizer for zinc fertilizer is zinc sulfate. When used as a base fertilizer, it is generally used in an amount of 1-2 kg per acre, and is evenly mixed with organic fertilizer or physiological acid fertilizer, even before sowing or planting. After spreading, stir it in the soil. Note that zinc fertilizer should not be mixed with phosphate fertilizer because phosphorus and zinc are antagonistic to each other, and mixed application will reduce their respective fertilizer efficiency. Zinc fertilizer has a post-effect, it does not have to be applied every year, and it can be applied once in 2-3 years. Second, as seed fertilizer application of zinc fertilizer for seed dressing seed, seed soaking and picking root three methods. Seed dressing seed per kilogram of zinc sulfate 2-3g, first dissolved with a small amount of water, and then sprayed on the seed, while spraying Side turn mix, the amount of water to mix seeds is appropriate, can be sown after drying. Soaking the general use of a concentration of 0.02% -0.05% of zinc sulfate solution, the seed will be poured into a good selection of zinc sulfate solution with 8-10 hours, remove and dry after sowing. Radix Paeoniae Alba is a cost-effective and effective method of increasing yield. When planting vegetables for transplanting, roots are planted in a 1% zinc oxide suspension. Third, as a topdressing application Topdressing can be directly applied to the soil of zinc fertilizer, zinc fertilizer can also be diluted for foliar fertilizer spraying. Soil topdressing generally uses 1-2kg of zinc sulfate per acre. It is best to use it centrally. Apply the application point or acupuncture point to the root system to facilitate the absorption of roots and increase the utilization of zinc fertilizer. Apply zinc fertilizer as foliar fertilizer. Spraying is a common top dressing method that can be applied to all classes of vegetable growth and development. In particular, when zinc deficiency symptoms occur in vegetables, zinc deficiency can be quickly transformed. Spraying usually uses 0.05%-0.1% zinc sulphate solution, and 0.1% dilution solution sprays three times in the whole growth period. the best. Tomato should be sprayed once after fruit setting and at the beginning of fruit picking; cucumber should be sprayed once at seedling stage, after sitting on roots, and at early harvest stage; Chinese cabbage should be sprayed once at seedling stage, rosette stage and early ball stage. It is best to spray after 4 pm, especially in the evening, and spray the whole plant evenly.
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