Bird of Paradise Flower-Pest Prevention measures of Cymbidium

There is a variety of yellow flowers in the genus Magnolia. Magnolia can grow up to 2 meters high, with large and strong leaves, 25 cm long and 10 cm wide, and petiole up to 1 m long. The leaves are evergreen and fan-shaped in two rows. Flowers grow at the end of the long stem. Fleshy inflorescences hard and beak-like, as perpendicular to the stem, like a bird's head. It is enough to support the sunbird family, which eats nectar on flowers. The flower has three bright orange sepals and three purplish blue petals. Two of them are United to form a honey tube like an arrow. When the sun ornithidae sits on it and eats nectar, the petals open and the pollen is covered on the bird's feet.

Dendrolimus angustifolia

Hazard characteristics

It mainly harms the leaves, nymphs and female adults suck sap on the back of the leaves, resulting in yellow-green spots on the front of the leaves, which will seriously affect the growth and development of the whole plant.

Prevention and cure method

At ordinary times, we should pay more attention to the reasonableness of fertilization and watering, and give more light and ventilation. If you find branches and leaves that suffer from insect pests, they should be cut off and burned in time. In addition, 1000-fold solution of 90% trichlorfon was sprayed comprehensively and evenly for control.

Hewang orchid snail

Hazard characteristics

The disease and insect mainly come out in the evening or in the early morning after heavy rain to eat the flowers and tender leaves of the orchid, causing serious harm to its appearance.

Prevention and cure method

In order to remove withered branches and leaves in time, once diseases and insects are found, they should be artificially hunted and killed, or poisonous baits such as snails should be planted in places where they are often active. In addition, 50% sulfuric acid and 80% dichlorvos were sprayed for drug control.

Crane orchid beetle

Hazard characteristics

It mainly harms the young part of the root of the orchid, causing the residual root to be cut off, so that the leaves turn yellow, the plant becomes thinner, and in serious cases, it will lead to the death of seedlings.

Prevention and cure method

Shake the plant in the early morning or evening to make the beetle fall and concentrate on killing. You can also use black light to trap and kill at night. When insect pests occur, 1000-1500 times of 50% marathon liquid is sprayed for control.

Artemisia angustifolia

Hazard characteristics

The heart-drilling beetle mainly harms the tender shoots and flower buds of the orchid, which is often eaten into the tender stem of the orchid with larvae, resulting in withered seedlings.

Prevention and cure method

Spray 4.5% cypermethrin EC 50 ml with 60 kg of water during the larval stage, once a week, 2-3 times in a row.

Time: 2019-04-16 Click: