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近年来，银合欢异木虱（HeteropsyllaCrawford）已成为亚太地区银合欢生产中一种最重要的害虫。银合欢品系对异木虱的抗性研究结果表明：灰白银合次K376（Leucanenapalli-da）和异叶银合欢Bray2（LeucaenadiversifoliaCPI#46568）具有高度的抗虫性；柯氏银合欢K740（Leucaenacollinsii）、异叶银合欢K784具有中等抗虫性;热研1号银合欢、K636、K584（均为Leucaenaleucocphala）为高度感虫品系。Brsy2、K740具有抗虫丰产性能，可作为饲用；K636。虽然虫口级数和虫害级数较高，但生长快，再生能力强，生物产量高，属耐虫害品系，适用于饲料生产，只要积极采取生物防治措施，也可望获得高产而优质的饲料。
In recent years, Heteropsylla crawford has become one of the most important pests in the production of silver in the Asia Pacific region. The results of the resistance of Acacia to different P. tabaci showed that Leucanenapalli-da and LeucaenadiversifoliaCPI # 46568 were highly resistant to insects. Leucaenacollinsii K740, , The heterophylla K784 has a moderate resistance to insects; hot research No. 1 Acacia, K636, K584 (both Leucaenaleucocphala) are highly susceptible strains. Brsy2, K740 has insect-resistant performance, can be used as feeding; K636. Although the number of insect population and insect pest series is high, but fast growth, strong reproductive ability, high biological yield, is a pest-resistant strain, suitable for feed production, as long as the biological control measures taken actively, but also expected to obtain high yield and quality feed.