The major pests and diseases that have occurred recently in citrus include: scab, anthrax, buds, red spiders, and scale insects. In the later period, there are citrus fruit flies and rust ticks. 1, prevention and treatment of scab (and anthrax): in addition to the first 1-2 mm in time to spray the buds in time, it should be sprayed again at two thirds of the time; optional 77% to kill, or 70 % Thiophanate, 50% Carbendazim 1000-1500 times spray. 2. Control flower buds: Use 80% diuretic 1000 times liquid spray in most whitening dew, and then manually remove the affected buds (commonly known as lantern flowers) and concentrate deeply. 3, control of spider mites: can choose to use 75% chlorite 3000 times, or 15% broom net 1000 times liquid spray (and governance rust tick); control aphids can choose to use net 1000 times, or avoid fog 2000 Double liquid spray. 4, prevention and control of scale insects: the city mainly to the sharp arrowhead, part of the orange orchard has blown cotton occurs; can be combined with pruning, cut off the insect branch, the election speed culling 1000 times liquid to prevent overwintering into adulterants, and then The key point is to spray 25% fluocazol or 40% larvae 1000--1500 times in the peak period of the first generation of young calves (eg, in the late mid-late period of late May). The positive and negative aspects of the leaves are required. Spray evenly, spaced 10-15 days, even spray 2-3 times.
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