蓖麻属大戟科,原产热带,为常绿小乔木,在温带为一年生草本灌木。 蓖麻的籽、叶、杆和根都有一种特殊的气味,并有微毒。长在田里可以防止田鼠和地下害虫为害。蓖麻叶可制成几种土农药,效果较好。如将蓖麻叶晒干磨成粉,按0.5％的量拌入土杂肥中,耕地时施入,可预防地下害虫(蛴螬、地老虎)对作物的侵害;将蓖麻鲜叶捣烂,兑10倍水喷入粪池,可杀死50～70％的蛆。 Castorium Euphorbiaceae, native tropical, small evergreen tree, in the temperate annual herb shrub. Castor seeds, leaves, poles and roots have a special smell, and slightly toxic. Long in the fields to prevent voles and underground pests damage. Castor leaves can be made into several kinds of soil pesticides, the effect is better. If castor leaves sun-dried into powder, mixed with 0.5% of Tuza Fei, cultivated land when applied to prevent underground pests (蛴 螬, earth tiger) on the crop damage; castor fresh leaves smashed, 10 times the water spray into the septic tank, can kill 50 to 70% of maggots.