In recent years, Panxi Town, Huaning County, Yunnan Province, mainly planted early-maturing citrus, and formulated the following citrus production measures for the physiological characteristics and phenological characteristics of special early-maturing citrus.
First, fertilization: "three promotion", "three strong"
"Three promotion" is to promote the spring shoots, promote the summer shoots, and promote the autumn shoots. 1. Promote spring shoots: Before February 20, apply urea, 2, promote summer shoots: before May 20, apply urea, 3, promote autumn shoots: before July 20, apply urea, sapling management is mainly nitrogen. Phosphorus is supplemented with potassium as a supplement. Annual: Promote the fertilizer at a rate of 0.1 kg per plant per plant. According to the condition of the shoots, the leaves are fully expanded when the leaves are fully self-cut, and 0.05 kg of urea is applied per plant. Two-year-old: The fertilizer is 0.15 kg per urea per plant. When the leaves are fully deployed, the fertilizer is applied. The urea applied per plant is not more than 0.05 kg (may not be applied, generally not applied, except for the weak branches). Three-year life: 0.15 kg of urea per plant per shoot. When promoting summer shoots, each plant has a 0.2 kg of sulphate calcium, and when the autumn shoots, potassium fertilizer is applied, and no strong shoot fertilizer (three years).
Second, fertilization methods (referring to spring, summer, autumn fertilizer)
Annual: 30cm from the trunk, the depth of the circular groove is 10cm wide and 10cm, and the fertilizer is scattered into the ditch, covering the soil and filling the water (that is, digging, fertilizing, covering soil, and watering). Two-year-old: mouth-type fertilization, 40cm from the trunk, 10cm in width and width. Three-year students: Groove application, 50cm from the trunk, 10cm in width and width, transposition. Winter Fertilizer: Annual: Fertilize 40cm from the trunk, 40cm deep, 15cm wide and 1m long. Two-year-old: Fertilize 60cm from the trunk, 40cm deep, 15cm wide and 1m long. Three years of life: the middle trench, 40cm deep, 15cm wide and 1m long. Application of winter fertilizer: aging of autumn shoots (applied when fully mature), from November to December, winter fertilizer is absolutely not applied urea, mainly farmyard manure, not less than 10 kg per plant per year, and phosphate fertilizer is not less than 0.3 kg. Above 0.5 kg.
Third, pest control:
1. Red spider (all claws) prevention
(1), the same pesticide is not used twice in one year; (2), the same pesticide should not be used continuously; (3), the quality of spraying: reach the leaf, the back, the trunk should be wet; (4), must Two consecutive times, 7 days apart; (5), the winter clearing is very important. (6), pick and cure: first, the central insect strain drug control; above is the winter clearing garden prevention (7), medication: flowering, young fruit period: available 2000 times or oxazide 1000 times or double guanidine 1000 times . During the flowering and young fruit period, Kruth, Sword, Correction, and Quenching (which will produce drug spots in young tissues after use) will not be used until June 20.
2, the potential leaves: mainly harm the young shoots, do not endanger the spring shoots, endanger the summer and autumn shoots, hazard during the extraction period to self-cutting, (1) should be used before the shoot, when pumped to 2 mm (meters Spray when the size is small, (2) must be used continuously, once every 7-10 days.
3, aphids: imidacloprid 1000 times.
4, yellow shoot disease: characteristics: yellow tip (summer autumn tip). (1) Use detoxification seedlings to control hibiscus; (2) Excavate diseased trees; (3) Excavate fruit trees without economic cultivation value.
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