Morphological characteristics of oleander
Evergreen shrubs or small trees. The plant height is 1.5-6 meters and the plant type is erect. The stem is smooth, the branching force is strong, the old branch is grayish brown, the new branch is purple brown or green. Simple whorl or opposite, lanceolate, 10-25 cm long, leathery, entire, midrib obvious, with a small amount of white milk in branches and leaves. Cymes terminal, Corolla funnelform, 5-lobed, flowers 3-5 cm in diameter, pink, crimson, red, white and other colors. Single or double, special aroma. The florescence is from June to October. Very fruity, long horned. The ripening period is from December to January of the following year.
- Prev
Control of aphids on oleander
Oleander aphid, also known as wood cotton aphid, is homoptera, aphids. Distribution throughout southern China, as well as Southeast Asia, Africa, South America countries. Damage form: damage oleander with aphid or aphid, growth inhibition of injured new shoots, blackening of upper and lower leaves, incomplete development of buds and flowers, abnormal opening, affecting ornamental value. Morphological characteristics: wingless parthenogenetic aphid body ovoid, long 2.3 mm, yellow body, such as banana skin. Frontal tubercle raised, higher than the middle frontal tubercle; dark antennae, with thick tile; beak up to the middle foot base segment. ventral tube long cylindrical, dark
- Next
Growing environment of oleander
Sex likes sunny, warm and humid environmental conditions. More cold-resistant, slightly shade-resistant, slightly alkali-resistant, drought and barren, avoid stagnant water, and have a certain resistance to toxic gases such as smoke and dust and sulfur dioxide. It is suitable for growing in slightly acidic to slightly alkaline soil with fertile, loose and well drained water. The light and temperature of potted bamboo should be kept in the room for overwintering, keep at room temperature more than 5 ℃, and put in the place where the window is fully illuminated by sunlight. It generally moves into the greenhouse around October 20 and out of the greenhouse around April 20. After leaving the room, you should first put it in the leeward and sunny place, gradually
Related
- Fuxing push coffee new agricultural production and marketing class: lack of small-scale processing plants
- Jujube rice field leisure farm deep ploughing Yilan for five years to create a space for organic food and play
- Nongyu Farm-A trial of organic papaya for brave women with advanced technology
- Four points for attention in the prevention and control of diseases and insect pests of edible fungi
- How to add nutrient solution to Edible Fungi
- Is there any good way to control edible fungus mites?
- Open Inoculation Technology of Edible Fungi
- Is there any clever way to use fertilizer for edible fungus in winter?
- What agents are used to kill the pathogens of edible fungi in the mushroom shed?
- Rapid drying of Edible Fungi