【摘要】 通过生长箱内人工接种试验和定．点取样调查两个途径，分别研究了温度、保温时间、斑龄及温、湿度综合作用对大豆灰斑病叶斑产孢的影响。结果表明，温度、湿度及其工作对病斑产孢均有显著影响，病斑日龄也是影响其产孢的重要因素。单个病斑的传染期一般为１９－２０天，以显症后第十一天产孢最多，供试三个品种规律一致。更多还原

【Abstract】 The effect of temperature,moistening period,ase of spot and thier interaction on sporulation of fear spot caused by C. sojina was studied with experiments in growth chamber andfieid. The results indicated:1. The temperature range for sporulation was 5-35℃,and the optimum temperature ofsporulation was 25℃.The relationship between number of spors and temperature may bedescribed as:2. Sporulation started after moistening for 4 hour.The longer moistening period , thehigher the number of spores. Their relationship fitted Gompertz model:3. Sporulation started 2 days after spot appearance, the peak of sporulaion was on the11th day after symptom apperance and the infections period is 19 days. The Richards modelwas used to describe cumulative number of sporulation over spot ages.4. The stepwise regression was used to anolyze the number of spores over temperature,moisten period and their interactions.in which N is the number of sporulation, DT is temperature, DP is moisten period, D isspotage.更多还原