The utility model discloses a cotton is experimental with single cave disseminator, including fixed subassembly and seeding subassembly, fixed subassembly includes dead lever, lower fixing rod, and ithas a fixed slide on the several to go up on the dead lever slide kit, and the last slide kit of lower fixing rod has a fixed slide under the several, all be provided with the scale on last dead lever, the lower fixing rod edge length direction, the seeding subassembly is including seeding pipe and seeding bowl, seeding bowl is installed in seeding nose end, and seeding pipe upper portion, lowerpart are nested in last fixed slide, down on the fixed slide respectively, and the seeding pipe forms stable structure with last dead lever, lower fixing rod fixed connection respectively through lastfixed slide, lower fixed slide. This disseminator convenient to carry, easy operation, the plant spacing is adjustable, has realized testing personnel's the seeding of standing, has reduced intensityof labour, has improved work efficiency and seeding accuracy.