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梨樹冬刮樹皮五注意

農諺說:“要想吃好梨,冬季刮樹皮。”在冬季給多年生的梨樹刮皮,能有效地剷除殘存在梨樹老翹皮內的梨黑星病、輪紋病、幹腐病、炭疽病等病菌及梨小食蟲、梨木虱、黃粉蟲等害蟲及蟲卵,保證梨樹健壯生長、多結果、結優質果。冬季給梨樹刮皮時要注意以下五點:
  1.注意刮皮要細緻。刮皮時要從梨樹三大主枝基部自上往下刮,尤其是對分杈處的老皮要認真細緻地刮除乾淨,枝枝不漏,株株刮淨。
  2.注意要將刮下的樹皮清除乾淨。刮樹皮時要在梨樹下鋪墊麻袋或塑膠布,將刮下的有病樹皮清理乾淨,集中起來在空曠處燒毀,以避免再次侵染危害梨樹,影響梨樹正常生長。
  3.注意刮皮要得當。正確的刮皮方法是:大樹刮皮露白,小樹刮皮露青。不應刮破木質部,以免因刮皮太重造成樹勢衰弱、死枝、死樹等不良現象發生。
  4.注意刮皮後抹藥消毒。對刮過皮的梨樹,待7~10天後用50倍的菌素清或腐必清藥液塗抹枝幹,殺菌消毒,千萬不要邊刮樹皮邊塗藥液,以免造成藥物中毒和死枝、死樹情況的發生。
  5.注意刮皮工具要衛生。凡用來刮梨樹皮的刀具,都要清潔衛生、不腐不鏽,每刮過一次帶病斑的樹皮後,都要及時用酒精或50倍的菌毒清藥液消毒滅菌後再行使用,避免病菌再次侵染梨樹,造成不必要的損失。

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