中国农业科学 ›› 2006, Vol. 39 ›› Issue (06): 1294- .

• 研究简报 • 上一篇    

树形对油桃幼树光截获能力和结果的影响

高清华,叶正文,章镇,李世诚,吴钰良,苏明申   

  1. 上海市农科院林木果树研究所
  • 收稿日期:2005-01-30 修回日期:1900-01-01 出版日期:2006-06-10 发布日期:2006-06-10
  • 通讯作者: 叶正文 SAASFFRI13

Effects of Different Training Systems on the Light Interception Ability and Fruiting of Young Nectarine Trees in Greenhouse

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  1. 上海市农科院林木果树研究所
  • Received:2005-01-30 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10

摘要: 【目的】研究设施栽培中树形对幼树光截获能力和生长结果的影响。【方法】以一、二年生油桃沪油004为试材,设计4种树形、在生长季节用不同浓度梯度的多效唑树冠叶面喷施处理的方法。【结果】(1)树形对冠层消光系数(K)的影响表现为主干形>Y形>开心形>十字形,十字形和开心形叶面积指数(LAI)之间无明显差异,但都稍高于主干形而极显著大于Y形;冠层光直接辐射透过系数(Tr)和光散射辐射透过系数(TDP)的大小表现为Y形>开心形>十字形>主干形。(2)多效唑处理后,幼树单株平均果实数和平均单果重均表现为主干形多于Y形,而每667m2平均产量则以主干形较高。【结论】设施栽培中采用主干形,树冠形成早期光截获能力较高。多效唑对不同树形的生长结果均产生一定的影响。

关键词: 油桃, 树形, 光截获, 结果, 设施栽培, 多效唑

Abstract: 【Objective】The aim of the experiment is to study the relationships between light-capture ability and fruiting with different training systems of Nectarine var. Huyou004. 【Method】Four different training systems including central leader form(CL), open-vase form (OF), Y form (YF) and intersection form (IF) were used in protected cultivation. At the same time,the leaf of the young nectarine trees were sprayed with different concentrations of PP333. 【Result】The results showed that: 1. Extinction coefficient of different forms of canopy was in a descending order of CL>YF>OF>IF, while the Tr and TDP in canopy were YF>OF>IF>CL. The LAIs in IF and OF were not distinct but both were larger than that in YF. The present study also showed that paclobutrazol(PP333) treatment caused the average fruit number per plant and the average fruit weight of CL higher than those in YF, except that CL form produced higher average yield per plant than YF when sprayed with (series concentration as 0-1 250 mg·L-1)PP333.【Conclusion】The young nectarine trees showed the highest light interception ability when treated with CL than the other three training systems. Paclobutrazol treatment has an positive effect on the vegetation and fruiting of four different training systems in some degree.

Key words: Prunus persica var Nectarine, Training system, light interception, fruiting, Protected culture, Paclobutrazol