【摘要】 通过调查,明确了寒地春油菜菌核病空中孢子量的田间消长动态,利用逐步回归分析和通径分析对影响空中孢子量的各影响因子进行了研究。结果表明,调查日前3d内的降水量和相对湿度及调查日子囊盘数量是影响田间空中孢子量的最主要因素。建立了空中孢子量的10因子逐步回归模拟方程,模型的拟合效果很好。更多还原

【Abstract】 The dynamic change of the spore amount in the air of Sclerotinia sclerotiorum on the spring rape in cold area was confirmed and the environmental factors influencing the number of spores in the air was studied by stepwise regression analysis and path analysis.The results showed that the rainfall and the relative humidity in the three days before investigation and the number of apothecium in investigation day were the key factors affecting the number of the spores in the air.The 10 factors stepwise regression equation model of the spores was established and the fitting validity was very good.更多还原