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苹果、梨、桃、枣等果树的生理落果有3个高峰期:一是花后1—2周,主要是授粉受精不良导致;二是花后6—7周,一般在6月份,主要是贮藏养分不足,果实营养供应不良而落果;三是采收前3—4周,主要是由于随着果实的成熟,形成大量的乙烯,使生长素含量下降,导致果实营养不良而脱落。 针对以上原因,可采取以下几种措旖,以减轻落果,提高产量。 1、搞好授粉受精。授粉的方法除人工授粉外,
Apple, pear, peach, jujube and other fruit physiological drop fruit has three peaks: first, after 1-2 weeks after anthesis, pollination and fertilization is mainly caused by poor; the second is 6-7 weeks after flowering, usually in June, mainly Thirdly, 3-4 weeks before harvest, it is mainly due to the formation of a large amount of ethylene as the fruit matures, causing the content of auxin to decrease, leading to malnutrition and falling off of the fruit. For the above reasons, can take the following measures fluttering in order to reduce fruit drop, increase production. 1, do a good job pollination fertilization. Pollination methods in addition to artificial pollination,