The survival of tillers developed from tiller nodes of every age could be promoted while tillers developed from the rhizomes could be whittled down by grazing interference during next growth season.

• 割草将影响翌年生长季前期各龄分蘖植株、尤其是老龄分蘖植株的物质生产，但是这种影响至生长季中期便消失。