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中国农学通报

中国农学通报 ›› 2016, Vol. 32 ›› Issue (13): 7-11.doi: 10.11924/j.issn.1000-6850.casb15100106

• 林学 园艺 园林 • 上一篇    下一篇

根外追肥对银杏光合作用的影响

胡映泉   

  1. 山西省林木育种研究中心 山西 太原 030031
  • 收稿日期:2015-10-25 修回日期:2015-11-19 接受日期:2015-11-25 出版日期:2016-05-17 发布日期:2016-05-17
  • 通讯作者: 胡映泉
  • 基金资助:
    山西林木育种中心攻关项目“银杏快速育苗研究”(LY20140201)

Effect of Foliage Spray on Photosynthesis in Ginkgo biloba L.

  • Received:2015-10-25 Revised:2015-11-19 Accepted:2015-11-25 Online:2016-05-17 Published:2016-05-17

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摘要： 为解决银杏育苗中土壤养分供应不足导致光合作用差,幼苗生长较弱的问题,试验拟采取根外追肥方式供给银杏养分,提高其光合效率促进生长。以3年生银杏幼苗为试材,设置T1(CK)、T2(0.50%尿素和0.50%过磷酸钙)、T3(0.50%尿素和0.50%磷酸二氢钾)、T4(0.50%尿素、0.50%磷酸二氢钾、0.10%微量元素)4个处理,田间小区试验设计,3次重复。结果表明：银杏不同月份净光合效率不同,追肥种类不同对净光合速率的影响不同,整个试验期间T4处理净光合速率均显著高于对照；根外追肥可以提高银杏叶片的蒸腾速率,T3、T4与对照相比差异显著,T3、T4之间无显著差异；除7月份之外,其余月份T4处理气孔导度始终处于最高值,与对照相比差异显著,其次为T3处理,T2处理对提高银杏气孔导度效果不显著；胞间CO2浓度除7月份之外T4处理均处于最低值,与对照相比差异显著；根外追肥可以影响银杏叶片水分利用效率。综合分析认为,T4处理对提高银杏叶片光合效率效果最佳。

关键词: 海棠、品质、功能性成分、筛选, 海棠、品质、功能性成分、筛选

Abstract: In order to study problems of Ginkgo biloba L poor photosynthesis, seedling growth is weak because of soil nutrient supply shortage in seedling, test to be taken by foliar way supply nutrients for Ginkgo biloba L and that to improve its photosynthetic efficiency and promote growth. 3 years old Ginkgo biloba L seedlings as test materials, set 4 treatment as T1(CK),T2(0.50% urea and 0.50%superphosphate), T3(0.50% urea and 0.50% KH2PO4),T4(0.50% urea and 0.50% KH2PO4, 0.10% trace elements), field experiment design, repeat 3 times. The results show that: The Ginkgo biloba L net photosynthetic efficiency different in different Month, then the influence of different with different types of fertilizer on net photosynthetic rate, the net photosynthetic rate was significantly higher than the control which in T4 treatment throughout the trial period; foliage spray can can improve transpiration rate which in Ginkgo biloba L leaf, T3 and T4 was significant difference with the control, there was no significant difference between T3 and T4; T4 treatment stomatal conductance is always at the highest value when in addition to July and that it was significant difference compared with the control,T3 treatment was followed, T2 treatments on Ginkgo biloba L stomatal conductance effect was not significant; intercellular CO2 concentration which T4 treatment was in the lowest value when in July and that it was significantly lower than the control; foliage spray can influences water use efficiency which in Ginkgo biloba L. Comprehensive analysis that T4 treatment to improve Ginkgo biloba L photosynthetic efficiency best.