What should be noted when growing blueberries?
What should be noted when growing blueberries? Please guide. When growing blueberries, note the following: Soil improvement: Soil organic matter content and pH value are important factors for the survival of blueberry cultivation. Generally, soil with an organic matter content of 5% and a pH value of 4.0-5.5 is required; otherwise, improvement is needed. When the organic matter content is lower than 5%, before planting...
What should be noted when growing blueberries? Please guide.
When growing blueberries, note the following points:
Soil improvement: Soil organic matter content and pH value are important factors for the survival of blueberry cultivation. Generally, soil with an organic matter content of 5% and a pH value of 4.0-5.5 is required; otherwise, improvement is needed. When the organic matter content is lower than 5%, mix river sand or sawdust, peat, rotten bark, etc. into the soil before planting. When the soil pH value (>5.5) or calcium content is too high, the pH value needs to be lowered. A large number of studies show that applying sulfur is an effective measure to lower soil pH value. At present, sulfur powder is mostly used at home and abroad to lower the pH value. The specific amount of sulfur applied should be determined according to different soil conditions and pH values. If the soil pH value is too low (<4.0)，常用石灰来调高pH值。
Planting blueberries: Planting can be done in spring or autumn. The plant and row spacing for rabbiteye blueberry is 2.0 m x 2.0 m, for highbush blueberry 1.2 m x 2.0 m, and for lowbush blueberry 1.0 m x 1.0 m. Rabbiteye blueberry is self-unfruitful, so it is best to configure highbush blueberry as a pollinizer. Highbush and lowbush blueberries have a relatively high self-fruitfulness rate, but the effect is better when pollinizers are configured. The configuration ratio of the main cultivar to the pollinizer cultivar is 1:1 or 1:2. After the seedlings are planted, they bear fruit in the 2nd year, and can reach full production in the 5th year.
Soil, fertilizer, and water management: Blueberry has fibrous roots and a shallow root distribution, so fertilizer and water management should be strengthened. The watering principle is that it can be watered in drought and drained in waterlogging. Soil fertilization should be determined according to soil and leaf analysis. Blueberry is an oligotrophic plant, so fertilizer must not be applied excessively, so as to avoid fertilizer damage. Blueberry is sensitive to chlorine, so chlorine-containing fertilizers such as ammonium chloride and potassium chloride should not be selected; when applying nitrogen, ammonium nitrogen fertilizer is preferable. When planting blueberries, mainly NPK compound fertilizer is applied as topdressing, and farmyard manure is rarely applied. Li Yadong's research believes that: when cultivating blueberries on dark brown forest soil, applying NPK compound fertilizer at a ratio of 1:1:1, with an application rate of 500-1000 kg/hm2, has a good effect. Highbush blueberry and rabbiteye blueberry use the furrow application method, while lowbush blueberry is mainly broadcast applied, with a depth of 10-15 cm being suitable. Fertilization is carried out before budding in early spring, and can also be applied once more during the fruit ripening stage.
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