摘除残留花瓣———一种防治番茄灰霉病的新方法番茄灰霉病是北方保护地番茄主要病害之一。该病在田间可以为害叶、茎、花和果实，以青果期受害最重，残留的花瓣或柱头先染病，后扩展至果柄或果面，致使果实腐烂。一般年份损失约２０％，严重年份可达５０％左右，对保护地... Removal of residual petals --- a new method of controlling tomato gray mold disease Botrytis cinerea is one of the major diseases of tomato in the northern protected areas. The disease in the field can damage the leaves, stems, flowers and fruits, the heaviest victims of green fruit, the remaining petals or stigma first disease, then extended to the fruit stalk or fruit surface, resulting in fruit decay. General year loss of about 20%, severe years up to 50%, on the protection of ...