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1964年銅陵县城郊公社,一千三百亩油菜,因遭菌核病的为害減产約两成。这一年作者在該公社調查,証明采取不同輪作换茬的油菜,菌核病发生情况是不同的。1.1960—1963年連續四年秋种油菜,发病普遍率高达50%,严重度为三至四級。2.1961年秋种大麦,1962—1963年連續二年秋种油菜,发病普遍率达21%,严重度为二至三级。但是油菜、大麦隔年种,如1961年秋种油菜,1962年秋种大麦,1963年秋种油菜的,发病显著減輕,发病普遍率为3.5%,严重度为一级。3.1961年秋种油
Tongling County suburbs commune in 1964, 1300 acres of rape, due to the scab damage caused by about 20%. This year the author investigated in the commune and proved that the occurrence of sclerotinia was different when using rape with different rotations. 1.1960 - 1963 autumn rape for four consecutive years, the prevalence rate as high as 50%, the severity of three to four. 2. Autumn barley in 1961, 1962-1963 two consecutive autumn rape, the prevalence rate of 21%, the severity of two to three. However, the number of rapeseed and barley from year to year, such as autumn rape in 1961, autumn barley in 1962 and autumn rape in autumn of 1963, was significantly reduced with a prevalence of 3.5% and a severity of one grade. 3. 1961 autumn oil