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1993年 11月 ,一场历史罕见的大冻害侵袭华北平原 ,造成山东、河北等 6省 2市的苹果树受害。由于没有经验、抢救措施不利 ,灾区苹果树大面积陆续死掉 ,苹果大量腐烂 ,尚存果树仍在继续死亡。为让大家认清冻害真相 ,了解死亡原因 ,对症下药 ,尽力挽救果树 ,现将调查结果简述如下
In November 1993, a rare freeze in history hit the North China Plain, causing damage to apple trees in 6 provinces and 2 cities in Shandong and Hebei. Due to lack of experience, rescue measures adversely affected large areas of apple trees in the disaster area one after another died, a large number of apple decay, the remaining fruit trees are still continuing to die. In order to let everyone recognize the truth of frost damage, understand the cause of death, prescribe the right remedy and try its best to save the fruit trees, the survey results are summarized as follows