Control of diseases and insect pests of oleander
1. After aphids are found, spray the plant with 800 times of 40% dichlorvos emulsion or water made from cigarette butts, and when the amount is small, it can also be removed with a brush. Other control methods refer to rose and a series of red pest control parts.
2. Scale insects damage branches and leaves.
Control method: spray the plant with Jieshi 2000 times liquid. Other control methods refer to crape myrtle pest control.
3. Black spot disease is easy to occur in high temperature and humidity, which is harmful to leaves. After the attack, 50% carbendazim 500 times or methyl topiramate 600 times can be sprayed. Other prevention and control methods refer to camellia.
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The insect on the edge of the vegetable field-the yellow poplar silk borer
The flowers bloom in spring and the insects begin to move. During the recent activities of science and technology going to the countryside, it was found that a pest, "boxwood silk borer", began to occur and damage on the roadside of the park. The yellow poplar silk borer is one of the common pests in plants, such as yellow poplar, melon seed, big leaf yellow poplar, small leaf yellow poplar, sparrow tongue yellow poplar, spoon leaf yellow poplar, Korean yellow poplar, holly and so on, which occur in Shanghai and other provinces and cities. Shanghai has three or four generations in a year, and the times overlap seriously. Usually spring starts in March, pupation begins in mid-April, Eclosion begins in late April, and the first generation is young in early May.
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Oleander willow leaf peach red for half a year
Alias: Willow leaf peach, half a year red family: for oleander, oleander origin: originating in Iran, now widely planted in tropical and subtropical areas; cultivated in various provinces and regions of our country. Morphological features: evergreen shrubs, up to 5 meters high, aqueous, glabrous. Leaves 3 Mel 4 whorled, opposite in lower part of branches, narrowly lanceolate, 11-15 cm long and 2 mi 2.5 cm wide, light green below; lateral veins flattened, densely parallel. Cymes terminal; calyx erect; Corolla crimson, fragrant, double
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