Planting method for comprehensively controlling citrus yellow shoot

Abstract

The invention discloses a planting method for comprehensively controlling citrus yellow shoot. The technical scheme aims to prevent and control citrus yellow shoot. The planting method comprises the steps: in spring, performing underground fertilization and overground fertilization, pruning branches and leaves, applying biological pesticide, performing spraying or drip irrigation of liquid fertilizer after a flowering period, spraying diluted foliar fertilizer, pruning branches and leaves, performing spraying or drip irrigation of liquid fertilizer in a fruit expansion period, spraying the diluted foliar fertilizer, pruning branches and leaves, cutting off diseased branches, dead branches, diseased leaves and diseased fruits after fruits are picked, and performing sterilization and pest killing. Compared with the prior art, comprehensive control is conducted in a citrus garden, organic matter and mineral elements in soil are increased, the retention capacity of water and fertilizer inthe soil is improved, and sufficient nutrition is provided for tree bodies through three-dimensional fertilization, so that the growth and development of the tree bodies are promoted effectively, theself-resistance ability of the citrus trees is restored, and the rhizosphere and leaf ecological environments are improved; and through cooperation with branch-leaf pruning and bio-pesticide spraying,a good growth condition is created, the spreading chance of yellow shoot is reduced, and the spread range of yellow shoot is controlled.

Description

technical field [0001] The invention relates to a method for preventing and treating plant diseases, in particular to a method for preventing and treating citrus huanglongbing. Background technique [0002] Citrus huanglongbing is mainly caused by a bacterium named Candidatus liberibacterasiaticus, which is transmitted and spread among citrus trees by psyllids. It mainly harms the new shoots, young leaves, flowers and fruits of citrus trees. In the early stage of citrus huanglongbing, yellowing of a few new shoots appears in the dark green crown, commonly known as "golden flowers", and three types of symptoms appear in the leaves: uniform yellowing, mottled yellowing, and nutrient-deficiency yellowing. The fruit setting rate of fruit trees is extremely low, the fruit is small, deformed, and of poor quality, and some varieties have "red-nosed fruit" in the near-maturing stage. With the development of the disease, there are more and more yellow shoots, and some leaves are li...

AI Technical Summary

Problems solved by technology

According to incomplete statistics, more than 40 million diseased trees in Guangdong, Guangxi and Fujian have been cut down due to infection, which not only caused economic losses, reduced farmers' income, but also affected the prospects for the sustainable development of the local citrus industry.

[0003] The prior art prevents and controls citrus Huanglongbing by strengthening the quarantine of seedlings, cutting down diseased trees, spraying chemical pesticides to kill psyllids, and establishing new disease-free orchards. Production reduction and quality decline, the economic loss caused by fruit farmers due to production reduction and loss of harvest