期刊论文

中文

果树学报

1009-9980

2007

24

5

616-619

10.3969/j.issn.1009-9980.2007.05.010

本校为第一机构

以中华猕猴桃翠玉和美味猕猴桃米良一号为试材,研究高温季节(7月初-9月底)不同遮阴强度(0、25%、50%、75%)对猕猴桃园生态因子和光合作用的影响.结果表明:未遮阴的自然条件下,猕猴桃叶、果表面温度极高,蒸腾强烈,叶片光合作用出现严重的"午休"现象,表明树体处于严重的胁迫状态;遮阴可在一定程度上降温增湿,改善猕猴桃冠幕微环境,大大降低叶温和果温,有效消除叶片光合作用的"午休"现象.翠玉适宜的遮阴强度约为25%,米良一号约为50%.遮阴对翠玉叶片蒸腾速率无显著影响,但对米良一号的影响较大.可见,适度遮阴能有效缓解夏季高温强光对猕猴桃的危害,但过度遮阴有负面影响.

The vines of Cuiyu cultivar （belonging to Actinidia. chinensis Planch.） and Miliang 1 cultivar, （belonging to Actinidia. deliciosa Liang ＆ Ferguson） were subjected to threelevel treatments of 25%, 50% and 75% overhead shading from early July to late September, with un-shaded vines as control. Result showed that the temperatures of leaf surface and fruit surface, and transpiration rate were terribly high without shading, and photosynthesis was strongly inhibited around mid day. The vines were under severe stress during hot summer season. Sh...