It is generally believed that the tree growth is too nutritious, the supply and demand of nutrients contradicts, resulting in fruit drop; the tree vigor is weak, malnutrition is caused, resulting in fruit drop; long drought and sudden rainfall cause fruit drop; pest damage, soil compaction, root physiological function weakening, can also cause fruit drop.
Recommendations: First, pay attention to the adjustment of tree vigor through various techniques (summer shearing, topping, and spraying of plant growth regulators); second, according to the development of the tree, timely basic management under the tree - top dressing, watering, cultivating loose soil , To provide a good root ecological environment for the growth and development of jujube; Third, according to the occurrence of pests and diseases, follow the "prevention-based, comprehensive prevention and control" principle of plant protection, in advance spray insecticide fungicides to prevent pests and diseases; Fourth, in the jujube One month before normal maturation, spray 40 mg/kg naphthalene acetic acid (first with a small amount of hot alkali water to dilute the naphthalene acetic acid to the mother liquor, then add water), spray once every 15 days, and spray twice.
Brown Smooth Shiitake Mushroom
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