Nitrogen deficiency: combined with autumn application base fertilizer or apple nitrogen fertilizer before flowering, mixed with inorganic nitrogen fertilizer (urea, ammonium sulfate) or topdressing pure nitrogen fertilizer in the base fertilizer, no fruit tree, plant application 0.25~0.45 kg; initial result tree 0.45~ 1.4 kg; Shengguoshu 1.4~1.9 kg or more. Fruit tree growth period, foliar spray 0.5% urea solution or Zhixin Ye Sheng (high nitrogen foliar fertilizer) 1000 ~ 1500 times liquid or spray Shi Bao 2000 times liquid.
Phosphorus deficiency: base application of organic fertilizer and inorganic phosphate fertilizer or phosphorus-containing compound fertilizer, spraying 0.2%~0.3% potassium dihydrogen phosphate or Zhixinhuaguobao (high-phosphorus foliar fertilizer) 1500 times liquid in the growing season, even spraying 2~3 Times.
Potassium deficiency: In the autumn, sufficient organic fertilizers such as pig manure, cow dung, grass ash, and straw fertilizer are applied to meet the long-term demand for potassium growth and development. The young fruit begins to expand, and the application of potassium sulfate is 20~25 kg/mu. Foliar application of 0.2% ~ 0.3% potassium dihydrogen phosphate aqueous solution, or 1% ~ 2% potassium sulfate, or Zhixin (high potassium foliar fertilizer) expansion fruit 2000 times liquid spray.
Iron deficiency: improving the soil and releasing the fixed iron element is a fundamental measure for preventing yellow leaf disease; when the spring drought is used, the salt is poured with low salt water to reduce the salt content of the soil; by sprinkling or drip irrigation, it cannot be used. Flooding in the flood; pay attention to drainage during the rainy season, keep the apple orchard without water, and the soil is well ventilated. Spraying 0.3%~0.5% ferrous sulfate solution before germination in the deficient orchard or spraying 0.1%~0.2% ferrous sulfate solution or 1500~2500 times solution of Zhixin high-iron in the growing season, spraying once every 20 days; or In the fruit trees, when the l~3 leaves at the top of the short branches begin to lose green, the spray of bismuth humic acid diamine iron 200 times solution or 0.5% urea plus 0.3% ferrous sulfate has a remarkable effect.
Magnesium deficiency: Adding organic fertilizer can supplement magnesium and reduce the loss of magnesium. In acidic soil, magnesium lime or phosphorus carbonate can be applied. For the magnesium-deficient soil, the magnesium sulfate can be mixed into the organic fertilizer, and attention should be paid to the mixing of phosphorus, potassium and calcium fertilizer. Spray l%~2% magnesium sulfate solution 2~3 times in June~Ju; or use 2%~3% magnesium sulfate or Zhixin high magnesium 2000~2500 times solution.
Boron deficiency: expand the hole to change the soil, and bury the green manure. More application of peanut cake, soybean cake and organic liquid fertilizer made from cattle and pig manure, combined with compound fertilizer or compound fertilizer to avoid partial application, heavy application of nitrogen fertilizer and phosphate fertilizer. Pay attention to keep the soil moist and reduce soil loss. When there is too much soil moisture in the summer and autumn rainy seasons, attention should be paid to trenching to remove stagnant water. After deciduous fall or early spring germination, combined with fruit tree fertilization, borax or boric acid is applied by a wheel groove or a radial groove. Spraying 0.3% borax aqueous solution or Zhixin Boron and Calcium 2000 times solution before flowering, flowering and flowering, the effect is fast and the effect is good.
Manganese deficiency: The leaf growth period is sprayed with 3% aqueous solution of manganese sulfate, which needs to be sprayed 3 times. The branches are coated with manganese sulfate solution or directly sprayed with Zhixin high manganese 1500 times solution.
Calcium deficiency: Increase the application of organic fertilizer to increase the absorbable calcium in the soil. During the growth period, Bianzhi Borax Calcium 2000 times solution or Kepu Rui calcium 2000 times solution is used in apple young fruit period, before bagging, after bagging and after fruit picking.
Phosphorus deficiency: base application of organic fertilizer and inorganic phosphate fertilizer or phosphorus-containing compound fertilizer, spraying 0.2%~0.3% potassium dihydrogen phosphate or Zhixinhuaguobao (high-phosphorus foliar fertilizer) 1500 times liquid in the growing season, even spraying 2~3 Times.
Potassium deficiency: In the autumn, sufficient organic fertilizers such as pig manure, cow dung, grass ash, and straw fertilizer are applied to meet the long-term demand for potassium growth and development. The young fruit begins to expand, and the application of potassium sulfate is 20~25 kg/mu. Foliar application of 0.2% ~ 0.3% potassium dihydrogen phosphate aqueous solution, or 1% ~ 2% potassium sulfate, or Zhixin (high potassium foliar fertilizer) expansion fruit 2000 times liquid spray.
Iron deficiency: improving the soil and releasing the fixed iron element is a fundamental measure for preventing yellow leaf disease; when the spring drought is used, the salt is poured with low salt water to reduce the salt content of the soil; by sprinkling or drip irrigation, it cannot be used. Flooding in the flood; pay attention to drainage during the rainy season, keep the apple orchard without water, and the soil is well ventilated. Spraying 0.3%~0.5% ferrous sulfate solution before germination in the deficient orchard or spraying 0.1%~0.2% ferrous sulfate solution or 1500~2500 times solution of Zhixin high-iron in the growing season, spraying once every 20 days; or In the fruit trees, when the l~3 leaves at the top of the short branches begin to lose green, the spray of bismuth humic acid diamine iron 200 times solution or 0.5% urea plus 0.3% ferrous sulfate has a remarkable effect.
Magnesium deficiency: Adding organic fertilizer can supplement magnesium and reduce the loss of magnesium. In acidic soil, magnesium lime or phosphorus carbonate can be applied. For the magnesium-deficient soil, the magnesium sulfate can be mixed into the organic fertilizer, and attention should be paid to the mixing of phosphorus, potassium and calcium fertilizer. Spray l%~2% magnesium sulfate solution 2~3 times in June~Ju; or use 2%~3% magnesium sulfate or Zhixin high magnesium 2000~2500 times solution.
Boron deficiency: expand the hole to change the soil, and bury the green manure. More application of peanut cake, soybean cake and organic liquid fertilizer made from cattle and pig manure, combined with compound fertilizer or compound fertilizer to avoid partial application, heavy application of nitrogen fertilizer and phosphate fertilizer. Pay attention to keep the soil moist and reduce soil loss. When there is too much soil moisture in the summer and autumn rainy seasons, attention should be paid to trenching to remove stagnant water. After deciduous fall or early spring germination, combined with fruit tree fertilization, borax or boric acid is applied by a wheel groove or a radial groove. Spraying 0.3% borax aqueous solution or Zhixin Boron and Calcium 2000 times solution before flowering, flowering and flowering, the effect is fast and the effect is good.
Manganese deficiency: The leaf growth period is sprayed with 3% aqueous solution of manganese sulfate, which needs to be sprayed 3 times. The branches are coated with manganese sulfate solution or directly sprayed with Zhixin high manganese 1500 times solution.
Calcium deficiency: Increase the application of organic fertilizer to increase the absorbable calcium in the soil. During the growth period, Bianzhi Borax Calcium 2000 times solution or Kepu Rui calcium 2000 times solution is used in apple young fruit period, before bagging, after bagging and after fruit picking.
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