Experiments were made on the adaptability of the fast-growing and high-yielding clone of Hevea Brasiliensis var.SCATC 7-33-97 at young stage to lower frequency tapping system with stimulants.

• 摘要研究了速生高产优良无性系热研7-33-97在幼龄开割期对低频刺激割制的适应性。