The Renewal method of growing Sugar Citrus Aging Tree
Aging trees caused by long age or over-dense planting, damage by diseases and insect pests, and poor management should be renewed and rejuvenated in time. There are three methods: main branch renewal, explicit renewal and rotation renewal.
1. The method of main branch renewal is suitable for plants with severe decline. The method is to cut off 0.7 m ~ 1 m from the base of the main branch, cut the strength of the backbone branch short, make the new shoot spit out, and carry out deep ploughing and fertilization in a proper range to renew the root group. After 2-3 years, the crown can be restored and the fruit can be restored.
two。 For the senile trees which can still bear fruit for some branches, the branches are cut short at the outside of the crown where the thickness is less than 2 cm ~ 3 cm, or all the 2 ~ 3-year-old lateral branches are cut off, and the base of the backbone branches is retained. If properly managed, the results can be achieved in two years.
3. In rotational renewal, the trees that can still bear fruit on some branches will be cut short and re-cut in turn within 2-3 years, and some of the side branches that are too dense and weak will be cut with vegetables to retain most of the branches and leaves with strong growth. In the renewal of a few years, we can still maintain a certain output every year.
After the crown is renewed, the trunk and main branches are bandaged or whitened with straw, the saw mouth should be trimmed and smooth, coated with preservatives or wax, the ground should be covered with sunscreen, fertilizer and water management and pest control should be strengthened, and appropriate vegetable buds should be used to ensure the healthy growth of new shoots.
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Control of Penicillium and Green Mold of Pomelo
The symptom characteristics are mainly harmful to the postharvest fruit during storage and transportation. the symptoms of the two diseases are similar, mostly from the pedicel or wound, showing a light brown waterlogging at first, the disease spot expands rapidly, the fruit becomes soft and rotten, and a layer of white mildew grows on the face. later, the white mildew spot turned into green mildew spot.
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Misunderstanding in the Application of Fruit Fertilizer for planting Sugar Orange trees
The application of strong fruit fertilizer from July to September is not only one of the key links of high quality and stable production of citrus, but also an effective measure to prevent the annual fruit phenomenon of citrus. However, in production, there are many misunderstandings in the application of strong fruit fertilizer to citrus, which is counterproductive and affects the yield and fruit quality.
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