Most of the weeds in the orchard need to be controlled except artificially planted pastures and natural enemies for grass breeding. Herbicides are one of the most efficient and economical methods, but chemical weeding needs to be used before weeds bloom. Herbicides, and regardless of chemical herbicides, have varying degrees of soil residue. It should also be noted that the herbicide dosage should not be arbitrarily increased or decreased; the use of new herbicides should be followed by a small area test before expanding the application. Through years of experiments, it has been found that in the orchard, 2 to 5 kilograms of ammonia can be sprayed on 15 kilograms of clean water. The weeds in the orchard first shrink rapidly and eventually die. This method has a significant effect on various weeds. , And the spraying of ammonia has fertilization, high operating efficiency, low cost, no residue.
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