The lack of trace elements such as calcium, iron, zinc, and boron in the pear orchard soil is widespread, especially the lack of phosphorus, potassium, calcium and magnesium in the pear orchard soil in the southern region, and the serious acidification of the soil. Therefore, the following fertilization principles must be applied to high-yield pear orchards.
Fertilization principles: 1. Increase the application of organic fertilizers, implement orchard planting green manure, cover straw, fertilize the soil. An orchard with severe soil acidification is modified with lime and organic fertilizers. 2. According to the soil fertility conditions of pear orchard and the growth condition of pear trees, the amount of nitrogen and phosphorus fertilizers should be reduced appropriately, and the application of potash fertilizers should be increased. The trace elements such as calcium, magnesium, iron, zinc, and boron should be added through foliar spraying. 3. Combining green yield increase and efficiency cultivation techniques and yield levels, soil fertility conditions, determine fertilizer application period, amount and nutrient ratio. 4. Optimize the fertilization method, change the applicator into a plant or acupuncture, rationally cooperate with irrigation and fertilization, and adjust the fertilizer with water. 5. Fertilization must be used together with photosynthetic nutrient film fertilizer, which can help plants absorb a lot of light, light, light, compatible with conventional fertilizers, nutrients to provide plant growth and development to the limit. Apply once a year to benefit.
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