论文部分内容阅读
在秋白菜三大病害(孤丁、霜霉、软腐)流行年份,往往看到三种病害的发生有着一定关系,经过1960年和1961年两年的调查和试验,进一步明确了它们之间的确存在着密切的相关。一、不同品种对孤丁病和霜霉病的感染性往往一致。1961年在北京农业大学试验站进行的不同原始材料观察,杂交组合 F_1的抗病鉴定和全国抗病品种区域性试验中共130余个材料中都获得了类似结果,引述其中部分结果如表1:
In the three major diseases of autumn cabbage (solitary dingy, downy mildew, soft rot), the epidemic years often saw the occurrence of the three diseases have a certain relationship, after two years of investigation and experiment in 1960 and 1961, to further clarify the relationship between them There is indeed a close correlation. First, the different species of Solitary and Downy Mildew infections are often the same. In 1961, a total of more than 130 materials obtained from observation of different raw materials at Beijing Agricultural University Experimental Station, resistance identification of F1 hybrids and regional testing of disease-resistant varieties in China won similar results. Some of the results are quoted in Table 1: