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今春各地苹果树腐烂病发生的情况,一般地说,确比去年轻些;但在某些个别地区依然十分严重。据各方报道与作者的调查,今春腐烂病病情的特点是旧病复发(重犯)的占绝对多数,新发生的微不足道。这种发病的情况说明两点:第一、去年的防治工作已收大效。第二、病疤的刮治工作存在着很严重的问题。今年的腐烂病防治工作当然还要全面推进;但是退一步说,假定我们除了考究刮治病
The incidence of apple tree rot in the spring of this year is generally lower than last year, but in some areas it is still very serious. According to the reports of various parties and authors, the characteristic of rot disease in spring is characterized by an absolute majority of recurrences (recidivism) and negligible new occurrence. The incidence of this situation shows two points: First, the prevention and control work last year has been effective. Second, there is a very serious problem in the cure of scars. Of course this year’s prevention and treatment of rot disease should also be fully promoted; but to take a step back, let’s assume that we should not only consider cure diseases