| 摘要: |
| 对秦美猕猴桃品种进行了不同夏剪处理试验,留足预备枝、疏除多余发育枝、强旺结果枝轻摘心相结合，使树冠内膛光照改善，叶幕下层的光强度为全光照的7.1%,净光合率为1.8 μmol/(m2·s)，落叶率4.2%；产量35 838 kg/hm2；平均单果重113.5 g,果实采收硬度6.1 kg/cm2,室温下贮藏20 d后为1.1 kg/cm2，果实软熟后可溶性固形物含量145 g/kg；翌年每结果母枝着生8.9个结果枝，每结果枝着生4.8个以上花序，强旺结果枝占到56.7%，均显著优于现行的疏除徒长枝、旺盛结果枝在结果部位之上留5叶摘心的方法。在本实验条件下，秦美品种的叶面积指数保持在2.9，叶果比保持在4∶1较为适宜。 |
| 关键词: 猕猴桃 夏剪 秦美 |
| DOI： |
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| 基金项目:国家科技攻关资助项目(2002BA515B11) |
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| Effect of different summer pruning on characters of leaf canopy and fruiting in kiwifruit |
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| Abstract: |
| Experiment of different summer pruning on kiwifruit (Actinidia deliciosa Liang C F et Ferguson A R.cv.Qinmei) was conducted.Integration of reserving shoots for next year,thinning out extra no fruiting shoots and light tipping of strong fruiting shoots increased light penetration of leaf canopy,PFD/full PFD under canopy being 7.1%,Pn 1.8 μmol/(m2·s)，leaf falling 4.2%；yield 35 838 kg/hm2；Average fruit weight 113.5 g,fruit flesh firmness 6.1 kg/cm2 when harvested,1.1 kg/cm2 after 20 d storage at room;8.9 fruiting shoots per cane and 4.8 florescences per fruiting shoot,strong fruiting shoots over 56.7% of total fruit shoots in next year.All these are significantly better than current summer pruning method which thin out water shoots and cut strong fruiting shoots to 5 leaves above fruiting node.To cultivar Qinmei,under the condition of this experiment,a leaf area index 2.9,and a leaf to fruit ratio 4∶1 is suitable. |
| Key words: kiwifruit summer pruning Qinmei |
