早春定植胶苗,当年生长量大,越冬情况较好。但常受春旱威协,如措施不当,则成活率低,生势较弱。从胶苗内因分析,主要是发根慢和根的生势较差,我国在1959年曾作了用IAA和NAA诱导橡胶种植材料生根的探索。近年,马来西亚橡胶研究院报导,IBA能促进橡胶种植材料提早发根,并 Early spring planting gel, then a large amount of growth, winter is better. However, often affected by spring drought Wei Association, such as improper measures, the survival rate is low, weak growth potential. From the inside of the gel, it is mainly the slow rooting and poor root growth. In 1959, China made an exploration of rooting of rubber planting materials induced by IAA and NAA. In recent years, the Malaysian Rubber Institute reported that IBA can promote early rooting of rubber planting material and