It is usually concentrated on the shoots, leaves and twigs, causing the damaged parts of the plants to shrink and deform. Aphids also secrete nectar to pollute the plants and induce diseases such as soot disease.
Wanling 600-800 times liquid or 25% rattan oil can be used to kill 800-1000 times liquid and spray. Quick killing is a kind of broad-spectrum organic phosphorus insecticide, which has the functions of contact killing, stomach poisoning and strong penetration. It can penetrate into plant tissues and has good control effect on chewing and piercing mouthparts pests. It is sprayed once a week for 2-3 times in a row.
Goldfish grass is harmed by red spider, its leaves are discolored, chlorophyll is destroyed, there are dense small yellow spots and small yellow spots on its surface, and it gradually shrinks, yellows and withers. When it is serious, it falls off and loses its ornamental value.
Red spider often hides in the back of branches and leaves or in dense places. It is easy to catch it by hand.
If the chemical agent is used for treatment, 20% trichlorodiol emulsion can be used, 800-1000 times of water can be added, and the solution can be made for spraying. The drug has a good killing effect on adults, nymphs and eggs. In addition, 50% dichlorvos emulsion can be added into 1000-1500 times of water to make a solution for spraying.
Whitefly sucks on plant sap, which will lead to discoloration, curling and atrophy of leaves, and also often become a vector of various toxins, causing other diseases.
0.01% of the solution can be killed by enemy.
Adults or nymphs are used to feed on plants for buds, leaves, flowers and young fruits. The young leaves curled after being eaten, and the shoots and flowers withered after being damaged.
In the early stage of the disease, 25% rattan or 40% dimethoate can be sprayed 400-500 times.
