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苹果烂果病严重发生的原因与防治１９９４年华北地区气候异常，致使该地区苹果园烂果极其严重。据我们调查，重病果园烂果率达６０％－７０％，个别轻园达１０％－２０％，是历史上烂果最严重的１年，果园地旁、沟边成堆的烂果，使果农造成了重大的经济损失。据我们调查分...
The Causes and Prevention of the Rotten Apple Disease Occurred Severely in North China in 1994, resulting in extremely serious rots in the apple orchards in the area. According to our investigation, rotten fruit in seriously ill orchards reaches 60% -70% and individual light gardens reach 10% -20%. It is one of the most serious rotten fruits in history. Fruit farmers caused significant economic losses. According to our investigation points ...