Generally speaking, quarantine diseases change every year, depending on the list published by the Ministry of Agriculture every year. At present, there are 24 kinds of quarantine diseases in China, including 8 kinds of fungi, 7 kinds of bacteria, 5 kinds of viruses and 4 kinds of nematodes. They are:

1, wheat dwarf smut and wheat Indian smut

2. Tobacco downy mildew

3. Downy mildew of corn

4. Soybean blight

5. Potato cancer

6. Verticillium wilt of alfalfa

7, elm withered

8, pear fire blight

9. Corn bacterial wilt

10, citrus Huanglongbing

1 1, fatal chlorosis of coconut

12, kidney bean bacterial wilt

Rice bacterial leaf streak 13

14, root cancer

15, tomato ringspot virus

16, southern bean mosaic virus

17, Vicia faba staining virus

18, carnation ringspot virus

19, potato broom top virus disease

20, potato cyst nematode

2 1, banana perforation nematode

22, pine wood nematode

23, scale bulb nematode