Method for treating citrus yellowing not caused by yellow shoot disease

Abstract

The invention discloses a method for treating citrus yellowing not caused by yellow shoot disease. According to the method, a yellowing repairing agent is applied to yellowing citrus for 3 to 5 timesevery other 7 to 10 days, for every time of using the yellowing repairing agent, the yellowing repairing agent is divided into two parts, one part is used to spray leaves and the other part is used toirrigate roots. The yellowing repairing agent is obtained by adding water into an active ingredient, and the active ingredient includes Conyza Canadensis extract, praseodymium nitrate, 5-aminolevulinic acid, lauroyl glutamic acid, potassium lactate and potassium cinnamate, wherein the Conyza Canadensis extract is obtained by conducting extraction on a whole plants of Conyza Canadensis by an aqueous solution of ethyl acetate, ethanol and hydrogen peroxide. The self-made yellowing repairing agent has obvious repairing effect on yellowing citrus tree (not caused by yellow shoot disease), the greening period of the yellowing citrus tree is about 3 months, and the greening rate is high, and is obviously better than that of a yellowing repairing scheme in the prior art.

Description

technical field [0001] The invention relates to the technical field of fruit tree cultivation and planting, in particular to a treatment method for citrus yellowing caused by non-huanglongbing. Background technique [0002] In the process of citrus planting, the planting problem that growers are most worried about is the yellowing of citrus. Many growers mistakenly think that it is Huanglongbing, and thus give up the management of citrus. However, there are many reasons for the yellowing of citrus, for example: 1. Cultivation and management: ring cutting damages the tree, excessive fruiting, tree vigor decline and yellowing, fertilization damages root yellowing, physiological drought yellowing, orchard stagnant water and rotten roots yellow Yellowing of the root system infested by soil pests, excessive hormones and herbicides, soil compaction, etc. 2. Effect of high and low temperature: under high temperature, chlorotic yellow spots are formed on the leaf surface. As the su...

AI Technical Summary

Problems solved by technology

5. Lack of nutrients or elements

However, in the actual planting, it was found that the above-mentioned measures have poor control effects on citrus yellowing. Although the recovery of citrus yellowing has improved, the yellowing recovery rate is low, and it is still difficult to meet the requirements.