塔形蓖麻穗长、穗粗,穗上下、里外的蒴果成熟期很不一致,给采收带来困难。摘晚了,先成熟的蒴果炸裂,落地后不易收回,造成减产;摘早了,籽粒不饱满,影响产量。据我乡试验,如果蓖麻果穗上(供试验的果穗全部为大穗,长有500～600粒种子)只有1～2％的蒴果稍变成黑绿色(在远处看,比其它蒴果颜色深),但果柄还没有脱水,仍能支撑起果粒,此时将果穗摘下,晒干后检查,只有2.9％是 Tower castor spike long, spike coarse, spike up and down, inside and outside the capsule is very inconsistent maturity, to harvest difficulties. Picked late, the first mature capsule burst, after landing difficult to recover, resulting in reduced production; pick up, the grain is not full, affecting the yield. According to my test, only 1 to 2% of the capsules slightly turn black-green if viewed from a castor ear (500 to 600 seeds long for all ears tested) Deep), but the stem has not been dehydrated, still able to support the fruit, then remove the ears, dried and checked, only 2.9% is