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本文研究了番茄早疫病在内蒙包头田间发病动态及条件，阐明了降雨、相对湿度、温度与该病发生和流行的关系。通过１９７９—１９８４年连续 ６年的观察和测算，结果表明：引起番茄早疫病发生和流行的主导因素是气象条件。在田间发病前５天均温为２１．６５℃，降雨２．２—４６．３０毫米，相对湿度大于７０％的时数大于４９．１２小时，早疫病即可发生。当 ６— ８月，降雨量总和大于１８３。８毫米，相对湿度大于６０％的时数达到１１８７个小时以上，番茄早疫病即可流行。实际上内蒙古６—８月均温２２℃左右，处于满足状态，而湿度是流行的主导因素。进入９月以后，因均温降至１５．９℃，早疫病流行速度减慢或停滞，这时温度为流行的主导因素。 在综合防治研究中，鉴定了２６个品种，在药剂防治中筛选出了代森锰锌、百菌清、灭菌丹、敌锌酮等４支杀菌剂，对早疫病的防效均可达到７０％以上。
The paper studied the onset and conditions of tomato early blight in Baotou, Inner Mongolia, and elucidated the relationship between rainfall, relative humidity and temperature and its occurrence and prevalence. The results showed that the dominant factor causing the occurrence and prevalence of early blight in tomato was meteorological conditions. Five days before onset in the field average temperature of 21.65 ℃, rainfall 2.2-46.30 mm, relative humidity greater than 70% of the time is greater than 49.12 hours, early blight can occur. When June-August, the total rainfall is more than 183.8 mm, and the relative humidity is more than 60% of the time reaches 1187 hours or more, tomato can be epidemic. In fact, average temperature in Inner Mongolia from June to August is about 22 ℃, which is in a state of satisfaction, while humidity is the dominant factor. Into September, due to the average temperature dropped to 15.9 ℃, early blight epidemic slowed down or stagnated, when the temperature prevalence of the dominant factor. In the comprehensive prevention and control study, 26 varieties were identified, and 4 fungicides such as mancozeb, chlorothalonil, sterilizing dantrole, and azadirachtin were screened for the prevention and treatment of pesticides, and the control effect on early blight was achieved More than 70%.