一、选地整地蓖麻是耐瘠薄，适应性强的作物，但要获得高产，必须选土层深厚，质地疏松，酸碱适度和富含有机质的土壤种植。蓖麻对土壤耕作要求较高，为使根系充分发育，必须深耕２５cm以上，整地质量达到“齐、平、墒、碎、净、松”六字标准。蓖麻不易连作，宜与豆科、禾本科 First, the choice of site preparation Castor is a barren, adaptable crops, but to obtain high yield, must select the soil layer is deep, loose texture, moderate acid and alkali and rich in organic matter of soil cultivation. Castor has high requirements on soil cultivation. In order to fully develop the root system, castor must be plowed for more than 25cm, and the quality of soil preparation should reach the standard of “homogeneous, flat, sour, broken, net and loose”. Castor is not easy even crop, should and leguminous, gramineous