Plantation method of castor-oil plant covering amorphophallus bulbifer

The invention discloses a plantation method of castor-oil plant covering amorphophallus bulbifer. The method comprises steps of plantation land selection and preparation, amorphophallus bulbifer seedling ball selection and processing, amorphophallus bulbifer plantation, castor-oil plant bunch plantation, field management and harvest. During land preparation, agricultural fertilizer, composite fertilizer and 3% phoxim particles are applied; in March and April, before broadcasting, processed amorphophallus bulfifer seedling balls are immersed by potassium permanagante solution; two castor-oil plant seeds are evenly bunch-planted between each two lines of amorphophallus bulbifers; after castor-oil and amorphophallus bulbifer sprout out, composite fertilizer is applied for each mu before rain; when the castor-oil plants grow 1.5 to 1.7m, castor-oil top buds are removed; when leaves of the amorphophallus bulbifers expand, mixtures of carbendazim wetting powder and validamycin wetting powder are sprayed on two plan