The sole application of cayenne, purslane, Ricinus communis Land Bougainvillea glabra Choisy showed control effect and the extract from purslane gave the best control.

• 田间试验结果表明,单独使用勒杜鹃、辣椒、马齿苋、蓖麻对桃蚜的自然种群都有一定的控制作用,其中单独使用马齿苋的蚜量变动系数较低;