Citrus disease principle

There are three common types of diseases during citrus production: anthrax, soy, scab, sand fever and other high fungal diseases; bacterial diseases - ulcer disease; lack of boron, zinc deficiency, sunburn, cracking and other physiological diseases .

The key period of citrus disease prevention and control: Spring shoot germination, flower Xie 2/3, young fruit, fruit enlargement and color change.

The principle of disease prevention and control: Comprehensive prevention and prevention are the main factors.

The main measures are:

Strengthen field management: Rational fertilization, cultivating strong tree vigor; grass cover, drought and flood control; prevent freezing damage and sunburn.

Reasonable sparse and pruning: 40-50 oranges per plant, 40-60 mandarin oranges, and 50-70 mandarin oranges, pruning large branches, maintaining independence and permeability of the tree; Sick branches burned.

Chemical control: The use of protective bactericides before the onset of disease prevention; the initial stage of the disease, the selection of therapeutic fungicides.

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