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通过连续两年对6个不同柱花草品种炭疽病的田间发病流行情况进行定位观察,并将炭疽病病情与大气温度、湿度和雨量之间进行相关分析。结果表明:柱花草炭疽病病情严重度与空气相对湿度成显著的正相关(r=0.440 37,Pr=0.045 7),与温度成负相关(r=-0.492 63,Pr=0.023 3),而与雨量相关性不明显。一年中病害的发生和流行有两个高峰,主峰出现在8~9月份,次峰出现在1月份左右。发病高峰一般出现在降水量高峰之后,二者间存在约一个月的时间差。
The incidence of anthracnose in six different columnar cultivars in the field was observed and observed for two consecutive years. The correlation between anthrax disease and atmospheric temperature, humidity and rainfall was analyzed. The results showed that the severity of Colletotrichum gloeosporioides had a significant positive correlation with air relative humidity (r = 0.440 37, Pr = 0.045 7) and a negative correlation with temperature (r = -0.492 63, Pr = 0.023 3) The correlation with rainfall is not obvious. There are two peaks in the occurrence and prevalence of diseases in the year. The main peak appears in August and September, and the second peak appears in January. The peak incidence generally occurs after the peak precipitation, the difference between the two about a month.