Zinc deficiency in crops is one of the most widespread micronutrient deficiencies, affecting plant growth and productivity. Common symptoms include leaf chlorosis, shortened internodes, clustered leaves, distorted growth, stunted plants, poor seed filling, and reduced yields. To address this issue, zinc fertilizers are commonly used. When applied, they significantly enhance crop development, improve seed-setting rates, increase resistance to cold and diseases, and can boost yields by 10% to 30%.
Zinc deficiency in soil is prevalent in many regions, especially in areas with high water tables, winter fields, muddy soils, high altitudes, and low temperatures. Excessive use of compound and phosphate fertilizers can also trigger zinc deficiency, making it necessary to supplement with zinc-based products. Additionally, the adoption of hybrid varieties and high-yield farming techniques increases the demand for zinc, requiring more frequent applications. Zinc fertilizers are effective across a wide range of crops, including corn, wheat, cotton, rapeseed, fruit trees, vegetables, soybeans, peanuts, artichokes, and tobacco, leading to improved quality and higher productivity.
The application methods for zinc fertilizer vary depending on the crop and soil type:
1. **Paddy Fields**: Apply 200 grams of large-grain zinc per acre. It can be used as a seedbed fertilizer in Putian, mixed with granular fertilizer and fine soil, and distributed during land preparation.
2. **Dryland Soil**: Use 200 grams of large-grain zinc per acre. Before planting, mix it with compound or blended fertilizer and fine soil, then spread it evenly over the field.
3. **Fruit Trees**: Apply 5 to 10 grams of large-grain zinc per tree, depending on the size of the canopy (approximately 10 to 30 grains). It can be combined with compound and organic fertilizers as a spring or fruit-enhancing fertilizer, applied along the drip line of the tree.
It's important to apply zinc fertilizer early in the growing season for maximum effectiveness. It should be used in combination with nitrogen, phosphorus, and potassium fertilizers to maximize nutrient uptake and yield. Always follow recommended application rates, as overuse can lead to imbalances. Large-grain zinc has a residual effect, so it can be applied once a year or every other year in deficient fields. Proper timing and correct dosage are key to achieving optimal results.
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