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1977～1979年我们对玉米丝黑穗病的发病规律进行了试验研究,初步结果如下:一、玉米丝黑穗病的发病条件试验用中感农家种白头霜和当地采集的丝黑穗病菌为材料,采用四因素两水平L~(16)(2~(26))的正交设计。按正交表的安排,以不同深度把种子点在不同湿度的无菌土纸袋中,上面复盖0.1%菌土100克,再复无菌土至不同厚度,置于自动控制的不同温度下育苗。每隔3～5天补充失水量。待幼苗三叶后移到田间。秋收前调查发病率作为考察指标。从正交试验的直观分析、方差分析和交互作用分析得知各因素对发病的影响如下: 1.78～79年试验资料方差分析表明,土温对发病的影响极显著(见表1)。
From 1977 to 1979, we conducted a pilot study on the incidence of maize head smut. The preliminary results are as follows: First, the incidence of maize head smut test with a sense of farm-type head cream and locally collected head smut Materials, using four factors and two levels of L ~ (16) (2 ~ (26)) orthogonal design. According to the arrangement of orthogonal table, the seeds were placed at different depths in sterile paper bags of different humidity, covered with 100% of 0.1% bacteria and soil, and then replenished sterile soil to different thicknesses and placed at different temperatures under automatic control Nursery. Every 3 to 5 days to add water loss. Seedlings to be moved to the field after three leaves. Survey the incidence of autumn before the survey as an indicator. From the orthogonal test analysis, analysis of variance and interaction analysis of the impact of various factors on the incidence are as follows: 1. 78-79 years of experimental data analysis of variance showed that soil temperature on the incidence of extremely significant (Table 1).