1.选地整地 蓖麻适应性强,耐旱耐瘠,对生产条件要求不严格,但要获得高产,须选择土层深厚、质地疏松、酸碱度适中和含有机质丰富的沙壤土种植,切忌种在低洼地和粘重黄土地上。选好地后要深 1. Selection site castor Castor adaptability, drought and barren, the production conditions are not strict, but to obtain high yield, to choose a deep soil, loose texture, moderate pH and organic matter rich in sandy loam planting, should not be planted in Low-lying and sticky heavy yellow land. After the election to be deep