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1 发生原因1 1 品种差异 在桃树主栽品种中 ,早红珠、早红霞、曙光都能正常坐果 ,而早凤王、霞晖 1号、砂子早生坐果率较低。1 2 贮存营养 贮存营养不足 ,造成花粉和胚囊的败育 ,影响授粉受精和早期胚和胚乳的发育 ,因而造成坐果效低。1 3 花期喷药 花期喷药易引起药
1 causes 1 1 species differences In the main cultivars of peach trees, Asarum early Hongxia, dawn can be normal fruit set, and early Fengwang, Xia Hui 1, sand early fruiting rate is low. 1 2 Storage Nutrient storage deficient in nutrition, resulting in the abortion of pollen and embryo sac, pollination and fertilization and early embryo and endosperm development, resulting in low fruit set. 1 3 flowering spray flowering easy to cause drug