随着“化杀”制种技术的不断提高,目前我省化杀制种已达到亩产二、三百斤、纯度在90％以上的水平。根据我校和永修、武宁以及浙江兰溪在海南制种的经验,夺取化杀制种高产、高质的主要技术环节是: 一、抓住花期准确相遇;二、种植规格化,长好稳健苗架;三、适期、适量、均匀喷药杀雄。现分述如下: 一、花期相遇是高产量和高纯度的前提 花期准确相遇,既是制种高产的先决条件,也是获得高纯度杂种的重要保证。化杀制种中,往往由于父本花期偏晚,造成大部分主穗结实率低而不纯(自交结实),且由于 With the “killing” seed production technology continues to improve, the current killing of species in our province has reached two, three hundred pounds per mu, the purity of more than 90% level. According to our school and Yongxiu, Wuning and Zhejiang Lanxi seed production experience in Hainan, to seize the high yield of Killing high yield, the main technical aspects are: First, to seize the exact date of flowering; Second, the cultivation of standardized, long and steady Miaojia; Third, the appropriate period, the right amount, spray evenly to kill male. Are described as follows: First, the encounter is the flowering of high-yield and high purity of the premise that the exact timing of flowering is not only a prerequisite for high-yielding, but also access to high-purity hybrid important guarantee. Killing species, often because of the late male flowering, resulting in most of the main spikelet rate is low and impure (self-confrontation), and due to