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油菜是重要的油料作物,也是较好的绿肥作物,国内外资料报道,洋油菜(即一种甘蓝型油菜)作为棉花的前作,可减轻枯萎病的危害程度。对此,于1983～1984年,在种植抗病品种的基础上,又进行了油菜压
Rape is an important oilseed crop and a good green manure crop. Domestic and foreign data reported that the emergence of rapeseed (a type of Brassica napus) as a cotton pretreatment can reduce the degree of damage caused by blight. In this regard, from 1983 to 1984, planting resistant varieties on the basis of another rape press