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陕西早酥梨树苗

简介—— 陕西早酥梨树苗种植对环境都有哪些要求?12.温度:梨树喜温,生育需要较高温度,休眠期则需一定低温。陕西梨树苗适宜的年平均

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陕西早酥梨树苗种植对环境都有哪些要求?

12.温度:梨树喜温,生育需要较高温度,休眠期则需一定低温。陕西梨树苗适宜的年平均温度秋子梨约为4-12℃,白梨及西洋梨约为7-15℃,沙梨约为13-21℃。当土温达0.5℃以上时,根系开始活动,6-7℃时生长新根;超过30℃或低于0℃时即停止生长。当气温达5℃以上,梨芽开始萌动,气温达10℃以上即能开花,14℃以上开花加速。梨的耐寒力也不同,原产中国东北部的秋子梨极耐寒,野生种可耐-52℃低温,栽培种-30 —-35℃;白梨类可耐-23 —-25℃;沙梨类及西洋梨 类可耐-20℃左右。在山东莱阳茌梨花器的受冻临界温度,现蕾期为-5℃,花序分离期为-3.5℃,开花期1-2天为-1.5 —-2℃,开花当天为-1.5℃。

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