If it is seedling stage, the disease will cause curling,
I hope it's not a virus disease of green onions,
Have you tried herbicides or something?
?
Onion yellow dwarf disease
Onion yellow dwarf disease, also known as onion virus disease, can occur from seedling stage to growth stage. The growth of the diseased plant is blocked, the leaves are skinny, shriveled and twisted, the leaves become thinner, the tips of the leaves gradually turn yellow, and sometimes yellow-white stripes or yellow-green spots of different lengths are produced on the leaves. Severely diseased plants are severely dwarfed, with twisted leaves becoming smaller and flatter, stopping growth, reducing wax, drooping leaves turning yellow, and in severe cases, the whole plant shrinks and dies.
Control method: (1) agricultural control. Before planting onions, weed out the weeds in the field, weed out diseased seedlings, topdressing and watering in time, and be careful not to work next to other onion and garlic crops. (2) timely control aphids and thrips. (3) Increase the application of organic fertilizer, timely topdressing and spraying plant growth regulators to enhance disease resistance. (4) Spraying 800-fold solution of 1.5% plant protection emulsion or 500-fold solution of 20% virus A wettable powder at the early stage of disease occurrence, and preventing/kloc-0 once every 5-7 days and 2-3 times.