Method for preventing and controlling Candidatus Liberobacter asiaticum and yellows by application of biochar energy fertilizer

Abstract

The invention discloses a method for preventing and controlling Candidatus Liberobacter asiaticum and yellows by the application of a biochar energy fertilizer. Based on the Haijingang carbon energy fertilizer, content of effective carbon in soil is rapidly increased. By changing digging for fertilization into fertilizer application with water on earth surface, carbon is rapidly supplemented for soil. By utilization of grass (orchard grass or natural grass) as a natural carbon source for carbon supplementation of soil and by changing clear tilling of soil into no-tillage and minimal tillage with grass, carbon is maintained and carbon loss is avoided to the maximum. Girdling and scoring and heading-back pruning are eliminated, the central main parts are mainly cultivated, and a tree structure is distributed according to 2-3 layers with 2-4 lateral branches at each layer. Suitable planting density of mature tree seedlings is 3m*5m. Ventilation and light permeating conditions are good in the whole garden, and 60-80 leaves are left for one fruit. By the method, plant morbidity is reduced, diseased trees are recovered early, fruits are fragrant and sweet with high quality and stable yield, and yield rate reaches up to 30% and above under the conditions of the same management and the same investment; the whole course is no-tillage and labor-saving; and dosage of fertilizers is reduced, and problems of soil hardening, acidification and salinization, etc. are alleviated.

Description

technical field [0001] The invention relates to the technical field of plant disease and insect pest control, in particular to a method for preventing and controlling citrus huanglongbing and yellowing disease by applying bio-carbon energy fertilizer. Background technique [0002] Citrus, with an annual output value of nearly 10 billion yuan, is the main fruit variety in Guangxi. However, due to the impact of citrus "huanglongbing" and "yellowing disease", economic losses of about one billion yuan will be caused every year. Among them, the causes of "Huanglongbing" and "Yellowing" of citrus in Lipu County and Laibin City are all caused by the lack of "carbon" in the root system. The "carbon" here is mainly the "organic carbon" generated by leaf photosynthesis, followed by the "organic carbon" released by microorganisms decomposing organic matter in the soil (which can be directly absorbed by the root system). As long as the "carbon" cycle in the citrus tree is normal, the r...

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Problems solved by technology

[0003] Further studies have found that the soils where citrus is planted in Guangxi generally lack "carbon": first, the main planting areas are mostly red soil and red soil, which is seriously short of "carbon"; second, excessive application of chemical fertilizers has accelerated the consumption of "carbon" in the soil; Grass as a natural "carbon" source has not been taken seriously, which reduces the opportunity for soil to obtain "carbon" compensation; the fourth is unreasonable cultivation techniques, which cut off the "carbon" cycle between leaves and roots

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