How to prevent and cure orange yellow dragon disease with granulated sugar?

What is sugar orange dragon disease? How to prevent and cure orange yellow dragon disease with granulated sugar? Also ask netizens with experience to help introduce sugar orange yellow dragon disease, also known as yellow tip disease, is an important disease on citrus, the main plant quarantine objects in China, can destroy the whole orange tree. Therefore, the farming network sorted out the harm of yellow friendship disease to sugar orange and its control methods, which are listed in detail below for netizens' reference. The harm of sugar orange yellow dragon disease: sugar orange yellow dragon disease, in the early stage of the disease, there will be a "yellow shoot" with uniform yellowing of leaves on the crown of fruit trees, or an irregular yellow-green barge in which the leaves start yellowing near the base of the vein or the edge of the leaf. The new shoot leaves re-emerging on the diseased branches remain green near the main and lateral veins, while the leaves are yellowed. In addition, when the plants with the first onset of Huanglong disease produce new shoots, they often appear a small number of yellowed shoots in the green canopy, that is, the so-called "golden flower arrangement". The transmission of Huanglong disease is mainly caused by citrus planthopper sucking juice from diseased plants and spreading the disease to healthy trees through saliva. Control methods of citrus orange Huanglong disease: method 1. Because wood lice is the main transmission pest of Huanglong disease, the first prevention method is to control and manage the citrus planthopper, so that the shoots of citrus branches can be neatly sucked, and each shoot shoot can be killed 1000 times faster with 25%, or 1500 times with 4.5% good green microemulsion, or 1500 spray with 20% stubborn insect enemies. Method 2. For fruit trees with mild Huanglong disease, drill holes can be drilled at the base of the trunk, the depth of the hole is 2 / 3 of the diameter of the trunk, and then 1000 × 10 / 6 tetracycline hydrochloride solution is injected into the hole with a syringe. Method 3. As soon as the fruit trees with serious Huanglong disease are found, it is recommended to dig them out and burn them out of the garden. The method of fertilizing mandarin tangerine the method of preventing and curing the gum disease of citrus