双层棚架式栽培的日本梨品种光合特性初探

以双层棚架式栽培条件下的7个日本梨(Pyrus pyrifolia Nakai)品种为试材,采用Li-6400便携式光合作用测定系统,对各品种的光合特性进行了比较研究,结果表明,日本梨品种喜水、新高、清澄为光合能力和干物质积累能力较高、水分需求量较多的类型,秋荣较低,筑水、幸水、丰水的光合能力和水分消耗都属中等,而秋荣属于光合能力和水分消耗均较低的类型.建议在日照充足、灌溉条件好的地方发展日本梨可选喜水、新高、清澄,而灌溉条件较差的地方可选秋荣.整形方式可采用双层棚架式.

Preliminary Study on Photosynthetic Characteristics of Japanese Pears in Double-layer Trellis Training and Pruning

The photosynthetic characteristics of seven cultivars of Japanese pears(Pyrus pyrifolia Nakai)in double-layer trellis training and pruning were studied by Li-6400 portable photosynthesis system.The results showed that:Kisui,Niitaka and Kotobukishinsui were the types of higher photosynthetic capacity,higher dry matter accumulation,and lower water demand.Akiba was the lowest type.Chikusui,Kosui and Housui were the medium types.So we recommended that Kisui.Niitaka and Kotobukishinsui were the suitable cultivars in the adequate sunlight and irrigation conditions for the development of Japanese pear,Akiba was the suitable cuhivar in the poor sunlight and irrigation conditions.The way of training and pruning could be double-layer trellis.