Nutrient bowls are generally used for growing cotton in the southern region. However, the use of nutrient bowls for seedlings often encounters problems with grass damage, which seriously inhibits the growth and development of cotton seedlings. Grass damage is caused by only one of the following two reasons: First, it is too late to turn over the newly selected seedbed The remaining weeds left by the plow are propagated; the second is the application of incompletely decomposed fertilizers, and the weed seeds are brought into the seedbed for rapid propagation. Therefore, it is necessary to apply a herbicide before the emergence of cotton after sowing. Lasso cream or Dulles cream can effectively prevent weed damage. It can be inferred from this:. [' there is no weed propagation effect, you will not encounter grass damage when using cotton nutrition bowl for seedling.', 'Poor application of herbicides after cotton emergence.', 'Effective prevention of weed hazards when growing cotton, indicating that one of the two herbicides was selected.', 'Cotton seedlings that use cotton nutrient bowls to grow seedlings have poor growth and development, indicating that they have encountered grass problems.']