Japanese cherry blossoms are deciduous trees of the genus Rosaceae, which are native to Japan and widely cultivated in northern and southern China. It is an important early spring flower species. Summer is the season with multiple pests and diseases. The pest control technology is introduced as follows.
I. Common pest damage Japanese common pests of the late-flowering cherry are: tea-winged pheasant, peach aphid, carrot microtubule pod, apple astragalus, Japanese cotton vine vine, wisteria ash amaranth, mulberry white pecker, Korean brown pecker, yellow Thorn moth, cotton stripe moth, big-sack moth, tea-bag moth, rod brown moth, brown-green moth, green tooth moth, green moth, green moth, green moth, mulberry thorn Moth, pink neck beetle, gypsy moth, small green leafhopper etc. If it happens, 3% hypertonic phenoxy-oxo-emulsion can be used to spray the tea-wing quail with 3000 times; with 10% imidacloprid wettable granules 2000 times, the peach pod, carrot microtubule pod, and apple yellow peony can be sprayed; with 3% high Benzophenone-oxime EC 3000 times fluid or 10% IP imidactable PM 2000 times or 95% Bai Ling emulsion 400 times, 20% ACEK 1000 times, spray and burn Tetranychus urticae, Korean brown cricket; sprayed with 3% hypertonic phenoxy-oxo-emulsion 3000 times solution or 1.2% alkaloids 1000 times solution to kill gypsy moths, rodents, brown cotton moths, big bag moths, tea bag moths With 20% diflubenzuron suspoemulsion 7000 times, 500 times Bt emulsion spray kill yellow thorn moth, brown side green moth, green tooth moth, green green thorn moth, green spot moth, Rinna thorn Moth, mulberry brown moth; sprayed with green Weiley 200 times to kill peach green neck Tianchi; with 25% Buxiuring wet particles 1000 times spray kill small green leafhopper.
Second, the common diseases Japanese cherry late common diseases are: nodule disease, anthrax and leaf perforation.
At the onset of root nodule disease, nodules appear in the roots of the plants. They are of various shapes and sizes, and their colors are brown to dark brown. The rough skin often appears cracked. The roots or rootstocks that occur on the ground or near the ground are often found. Scion joints. Infested plants usually show poor growth and short plants. Control methods: Dig up the damaged plants, rinse the soil, soak the roots in 1% copper sulfate solution for 5-8 minutes, rinse after soaking, and then plant; remove the nodules and apply 0.1% to the wound. Mercury as a solution, and then planted.
Early onset of anthrax on the young leaves with round lesions, lesions can be perforated after the formation of healing, after June the leaves hardened, lesions on the leaf surface rough, brown irregular lesions. When the disease is severe, it can cause a large number of fallen leaves and cause dry shoots. Control methods: use 70% mancozeb wettable particles 1000 times solution or 50% carbendazim wettable particles 500 times solution, 50% eutectic special wettable particles 1000 times alternately spray, even spray 3 to 4 times , Every 7 to 10 days interval; leaf spraying on plants is prohibited during the onset.
When spotted brown hole punching disease occurs, the leaves begin to have gray-brown round dots. As the disease progresses, a round spot with a diameter of about 3 cm is gradually formed. The boundary of the lesion is clear. The outside is purple brown, and the middle white brown is. There is a ring pattern, and irregular perforation is formed after the lesion has fallen off. Control methods: After onset, 50% Garinong 1000 times solution can be sprayed for prevention and treatment. Once every 10 days, continuous spraying of 3 to 4 times can effectively control the condition.
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