A Field Identification Method for Citrus Huanglongbing

Abstract

The invention belongs to the technical field of fruit tree plant disease and insect pest identification, and particularly relates to a method for identifying citrus tristeza virus in a field. The method for identifying citrus tristeza virus in the field comprises the following steps that 1, before a suspected tree suffering from citrus tristeza virus is felled or excavated, old and sick branches are gently pruned, annular ditching and fertilizer application are performed two times along a crown water drip line, burying and earthing are performed, orchard cleaning and fertilizer application are performed one time in winter, and fertilizer application is performed one time after second-time physiological fruit dropping; 2, the colors of tip leaves of three batches in spring, summer and winter are observed after fertilizer application; 3, when fruits are ripened at the end of the year, and shapes and colors of fruits are observed. The method for identifying citrus tristeza virus in advance during root fertilizer application is adopted for replacing an existing method for uniformly pruning all suspected trees suffering from citrus tristeza virus, and the method has the advantages of being safe, simple and low in cost.

Description

technical field [0001] The invention belongs to the technical field of fruit tree cultivation, and in particular relates to a method for identifying citrus greening disease in the field. Background technique [0002] Citrus Huanglongbing is a devastating disease of citrus production in the world. It is caused by a Gram-negative bacterium limited to the phloem and can infect a variety of Rutaceae plants, including Citrus, Citrus, Aurantium and Murata. . At present, the disease is mainly distributed in nearly 50 countries and regions in Asia, Africa, Oceania, South America and North America, and 11 of China's 19 citrus producing provinces (municipalities, autonomous regions) have been affected by the disease, which seriously restricts citrus production. healthy development of the industry. Symptoms of suspected Huanglongbing trees include mottled leaves, uniform yellowing of leaves, red-nosed fruit, green fruit (not turning color), and tree vigor decline. Damage to the root...

AI Technical Summary

Problems solved by technology

But at present, in many places, it is often judged whether a plant is infected with Huanglongbing in the field according to the shape of the tree and the color of the leaves (mottled, yellowing). Plain, etc.) plants were also dug out, resulting in irreparable part of the loss

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