In the later period of enlargement of walnuts, it is necessary to make up for medium and small fertilizer

In addition to nutrient elements such as nitrogen, phosphorus, and potassium, walnut kernels also require trace elements such as calcium, magnesium, zinc, boron, iron, molybdenum, and manganese. If there are plenty of nutrients and trace elements are scarce, only Can sit and stay fruit without development, nuts degradation, the formation of empty fruit, yield and quality decreased significantly, and even lost food value. Therefore, during the expansion of walnut fruit, in the application of a large number of elemental fertilizers, but also pay attention to increase the application of trace element fertilizers to promote fruit development.

Specific method: In the late expansion of walnut fruit, apply a trace element fertilizer. For trees older than 5 years, 250-300 g of magnesium sulfate, 150-200 g of calcium ammonium nitrate, 75-100 g of zinc sulfate, 50-75 g of borax, 100 mg of saponin, or Han and European Gods. 150 grams. Surround the canopy drip line, dig depth and width of 25 to 30 cm in the ring ditch, and then stir and mix all the fertilizers thoroughly and apply to the ring ditch. Cover the soil. In addition, in the walnut fruit expansion period, but also every 15 to 20 days foliar spray once 0.1% magnesium sulfate, 0.1% zinc sulfate, 0.1% borax, 0.1% ferrous sulfate, 0.1% ammonium molybdate, 0.3% calcium nitrate, 600 times amino acid compound micro-fertilizer mixture, continuous spraying 2 to 3 times. Evenly spraying all the branches and fruits inside and outside the canopy, it is advisable to start dropping drops of water from the leaves to supplement various trace elements in the leaves.

Potassium Phosphates

Potassium Phosphates,Tricalcium Phosphate,Tripotassium Phosphate,Trimagnesium Phosphate

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