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(三)促成栽培的技术要点1.休眠与破眠葡萄冬季休眠需在7.2℃以下约经1500～2000小时。充分的低温休眠可提高发芽和开花整齐度。在江、浙、沪常年1月底至2月上旬结束休眠,因而2月上旬是保温(不加温)大棚覆膜的最佳时期,此时温度开始缓慢上升,有利于蓄热保温。如在冬季落叶后(12月),用20%石灰氮液处理一年生枝芽,对葡萄有提早一周左右破眠、萌芽、开花结果的明显效应,对保温或加温大棚均可适当提前覆膜。石灰氮先用温水搅拌溶解,沉淀后的清液,随取随用,可用毛刷涂刷休眠的芽眼,而对
(C) to promote the cultivation of technical points 1 dormancy and sleep Grape winter dormancy to be about 7.2 to about 1500 ~ 2000 hours. Full hypothermia improves germination and flowering uniformity. In Jiangsu, Zhejiang and Shanghai perennial end of January to early February to end the sleep, so early February is the best insulation (not warm) greenhouse film, when the temperature began to rise slowly, is conducive to thermal storage. As in the winter after deciduous (December), with 20% lime nitrogen solution annual branch buds, the grapes about a week earlier, the effect of breaking, sprouting, flowering effect, the insulation or heating greenhouses can be appropriate pre-coating . Lime nitrogen first heated with warm water to dissolve, after precipitation of the clear liquid, with the random access, brush brush dormancy eye buds, and