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为什么苹果会有坑

更新时间: 2020-10-09 00:00:00     

苹果表面上出现坑坑洼洼、凹凸不平往往是生理性病害,生理性病害一般由缺素造成的,比如缺硼,果实表面就容易出现这种坑坑洼洼的病症。对于缺硼果树,可于秋季或春季开花前加施硼肥,施肥量因树体大小而异,用量不可过多,施肥后及时灌水,防止产生肥害。除此,也可根外喷施,在开花前,开花期和落花后各喷一次硼砂溶液,浓度不宜过高。另外,碱性强的土壤硼砂易被钙固定,采用根外喷施效果更好。

关键词: 为什么 苹果

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