Exotic weeds have caused serious damage to crop production, orchards, lawns, environment and biodiversity in China. The reason why exotic weeds can cause harm in the incoming ground is closely related to some of their characteristics and local lack of environmental resistance. The management of exotic weeds should be taken from the prevention of the introduction of foreign weeds and the prevention of existing exotic weeds. Measures to prevent incoming traffic include:
(1) Strengthening plant quarantine;
(2) Establish a risk assessment system for introduction and domestication of exotic plants;
(3) Encourage the use of native plants;
For the prevention of existing alien weeds, comprehensive control measures should be taken:
(1) Prevention and control of ecological damage;
(2) Carry out biological control of exotic weeds;
(3) Using economic plants for habitat replacement control;
(4) Carry out the use of exotic weeds.
Up to now, there are 76 genera and 108 species of exotic weeds that have been recorded in China. Among them, there are one species of malignant weeds, 14 species belonging to regional malignant weeds, and 8 species belonging to common weeds, and the rest are general weeds.
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