叶面肥对平欧杂种榛光合和生长结实的影响

Effects of Foliar Fertilization on Photosynthetic and Fructify Growth of Corylus heterophylla×Corylus avellanay

以新疆农业科学院安宁渠实验林场5年生平欧杂种榛为对象,通过喷施不同叶面肥试验,研究了不同处理对平欧杂种榛光合特性和生长结实的影响。结果表明:(1)叶面喷肥效应表现由大到小顺序为尿素、磷酸二氢钾、氨基酸。不喷施尿素处理对叶片的净光合速率、气孔导度、蒸腾速率、叶绿素质量分数、榛子的产量都有显著的影响(P<0.05),不喷施磷酸二氢钾处理次之、不喷施氨基酸处理的影响最小。(2)在果壳膨大期和果仁膨大期,叶面喷施尿素、磷酸二氢钾、氨基酸的质量浓度分别为5.939 4、3.786 7、0.750 0 g/L时,最有利于提高平欧杂种榛的产量。

With five-year tree of the Corylus heterophylla×Corylus avellanay in Academy of Agricultural Experimental Farm Anningqu of Urumqi-Xinjiang,we studied the effects of different levels of foliar fertilizer treatments on the European hybrid hazelnut photosynthetic characteristics and fructify growth regulation by foliar spraying.Foliar fertilizer effect performance in descending order are CO（NH2）2,KH2PO4,and acid soluble fertilizer.Not spraying（CO（NH2）2） treatment has more significant effect on net photosynthetic rate,stomatal conductance,transpiration rate,SPAD value and yield（P〈0.05）,followed by not spraying KH2PO4 and spraying amino acids.In nutshell and nuts enlargement,spraying CO（NH2）2of 5.939 4g / L and 3.786 7 g / L of KH2PO4 and 0.750 0 g / L of acid soluble fertilizer can improve the level of hazelnut production with the best result.