蓖麻要获得高产,应掌握以下技术要点: 1.选择长势健壮,增产潜力大的花塔2号、花塔3号、黑塔1号等良种。播前晒种2～3天,并用40～60℃温水浸种4～8小时,去掉秕弱瘦籽。 2.蓖麻棵高叶大、分枝力强、不宜密植。中上等地力以450～600株为宜,碱荒薄地700～800株。采用大小行种植,大行距2米,小行距1米。 3.每亩底施腐熟的厩肥或堆肥750～1000公斤、过磷酸钙20公斤、硫酸铵 Castor to obtain high yield, should have the following technical points: 1. Choose robust, yield potential flower tower 2, flower tower 3, black tower 1 and other seeds. Sowing 2 to 3 days before sowing, and soaking 40 ~ 60 ℃ warm water for 4 to 8 hours, remove the weak thin seed. 2. Castor leaves tall, strong branches, not close planting. In the upper soil to 450 to 600 plants is appropriate, alkali desolate to 700 ~ 800 strains. The size of the line planting, big row spacing 2 meters, small row spacing of 1 meter. 3. At the end of maturity facilities manure or compost 750 ~ 1000 kg, 20 kg of superphosphate, ammonium sulfate