It is desirable for a light frost to touch the cane to sweeten it, as persimmons and citrus must be touched, but a heavy frost ruins it, so that the stalks sour where they stand.

像柿子和柑橘一样， 需要轻霜接触甘蔗使其变甜， 但重霜会破坏它， 以至于茎杆在它们站立的地方变酸。