There are more than 250 kinds of diseases and insect pests that harm chestnut, so the policy of "prevention first, comprehensive control" should be adopted in production. The so-called "prevention first" means to make a good forecast of pests and diseases before a large-scale and large-scale outbreak, control the harm of pests and diseases to a minimum, and plan ahead; "Comprehensive control" refers to the comprehensive use of various control methods, not just a single control method. The methods of chestnut pest control mainly include:

(1) Plant Quarantine and Agricultural Control

It is forbidden to introduce seedlings, scions and seeds. Extremely harmful pests. Transportation between countries and between different parts of China must be carried out at designated places (docks, stations, warehouses, markets, etc.). ) quarantine personnel. Only those who pass the quarantine inspection can be transported. Agricultural control is mainly through agricultural measures, such as cultivating virus-free seedlings, reasonable pruning, timely irrigation, intertillage weeding, reasonable fertilization, good orchard sanitation and other production measures to control pests and diseases.

(2) Biological control

Refers to the use of biological or biological agents to control pests. The biological control effect is good, it does not pollute the environment, and it has broad application prospects in production. In the biological control of chestnut, the most common use is to control chestnut gall wasp with Chinese long-tailed wasp. In addition, Australian ladybug, red ladybug and black-edged ladybug can control the introduction of straw sandals and cotton blowing. Birds that feed on gypsy moth and various caterpillars can also reduce the harm of such pests to some extent.

(3) Physical prevention and control

Refers to the method of eliminating pests by using their responses to physical phenomena such as temperature, light and heat. For example, using the phototaxis of some moths, set up black lights in the garden to trap and kill moths. In the orchard, sex attractants can be hung to trap and kill peach fruit borers, and sweet and sour bottles can be hung to trap and kill scarabs. Physical control has the advantages of no pollution, no pollution and low cost.

(4) Chemical control

Refers to the use of chemical drugs to control pests and diseases, which is the most important control method in production at present. There are many kinds of pesticides. According to its mode of action, there are stomach toxicity, contact killing, internal inhalation, fumigation, attractant and so on. Chemical control is simple, rapid and effective, but drugs are expensive and costly. Improper operation is easy to cause drug damage, which is also dangerous to human and animal lives and pollutes the environment.