The insect pest of Lanhui

The pests of Lanhui are large and small, and the large ones are easy to detect, but the small ones are not easy to detect. Therefore, normally, we should pay attention to the existence of pests and look for traces of pests. For example, pluck away the Langen to see if there are signs of being bitten by pests; often tear off dried bracts to see if the pests are hidden.

Species of insect pests

Aphids: this is the most common pest in the orchid house, which is small and specializes in sucking plant juice, which is divided into two categories: winged and wingless.

Prevention and control methods: aphids are small, as long as careful observation, can still be identified, one day found aphids, can take turns spraying Saiwen and marathon, can be effectively dispelled.

Scale insects: scale insects specialize in sucking up sap from plant tissues, and some species also emit poison gas.

Prevention and control: the most effective way to control shell insects is to use marathons. However, scale insects have shell protection, so when they are found on blue mash, they should be brushed off with a brush before spraying chemicals before they can be really removed.

Slug: the shape of a slug is similar to that of a shellless snail and its body is long and black. The easiest way to control the damage caused by slugs is to pick them up by hand. In the orchid room, you can also put some delicious fruit on a plate to lure slugs in groups and hunt them together.

Whitefly: whitefly likes to hide in secret places to harm orchid plants, such as within bracts, between root strips, and in unopened leaves.

Prevention and control methods: because of the appearance of whitefly and look at a layer of protective wax powder, therefore, when spraying, it is appropriate to add human development agent to the agent in order to achieve a complete effect. The suitable medicine is the marathon.

Small spiders: small spiders can be divided into lights, yellow, red and green. Red spiders are called red spiders.

The method of prevention and control: increase the humidity of the orchid room and strengthen the spraying power of the orchid plant, which can reduce the attachment of the small spider to the orchid plant, but this method is very difficult to completely dispel the small spider. It is best to spray the agent that kills the small spider at intervals of seven to ten days and spray it twice in a row.

Ants: ants are harmless to the orchid plant originally, but because ants love to eat the juice secreted by aphids, they will damage the orchid plant as the aphids move.

The method of prevention and control: spraying insecticides such as marathon and Saiwen can kill ants and other pests. (Zhang Fengrong)