Fruit tree hole storage and fertilizer is an effective way to solve the problem of lack of water and fertilizer in orchards in mountainous and arid areas. The specific operation method is described as follows:
1. To solve the straw handle, cut the corn stalks, wheat straw or weeds into 30-35 cm long sections, bundle the grassy handles with a diameter of 15-25 cm (three common sticks), and place them in 10% urea solution or Soak in fresh urine for 1.5 days, let it suck enough water and fertilizer.
2. The number of digging holes is determined by the size of the canopy, and usually 10 to 6 years old apple trees can dig 4 to 6 holes. The diameter of the hole is slightly larger than the diameter of the grass handle, usually 20-30 cm. The depth of the hole is 35-40 cm. When the soil is thin, it may be shallower, but it must be 3-5 cm higher than the embedded grass handle. The acupuncture points are slightly below the vertical projection of the crown.
3. The buried grass handle will be fully soaked in the grass into the vertical hole, and then 50-100 grams of potassium chloride, 50-100 grams of superphosphate, 50 grams of urea mixed with soil and fill in the grass around the handle, step on Firmly step on it. The top of the grass cover is covered with 1 cm thick soil, and then 50 g of urea is applied. Afterwards, it is watered and 4-5 kg ​​per hole is watered.
4. The cover film is finally covered with a thin film covering all the tree plates, and the hole is 1-2 cm lower than the tree plate. When watering next time, poke the hole with a wooden stick and water 4 to 5 kg per hole. When topdressing is required, the fertilizer is dissolved in water and then poured. After pouring, press the holes with the clods to prevent the wind from blowing the film.
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