防护网对冬枣生长和果实品质的影响  

Effects of Insect-proof Net on the Growth and Fruit Quality to Chinese Jujube Tree

作　　者：史淑一[1] 侯时季[1] 杨守军[1] 彭广霖[1] 张志芬[1] 

机构地区：[1]中国农业大学烟台研究院,山东烟台264670

出　　处：《北方园艺》2012年第12期39-42,共4页Northern Horticulture

基　　金：中国农业大学(烟台)校级资助项目(yt2007.14);‘十一五’国家科技支撑计划重大专项资助项目(2006BAD03A1505-3)

摘　　要：以7 a生的冬枣(Zizyphus jujuba Mill.)为试材,采用不同时间覆网并辅之根剪措施,研究防护网对冬枣生长及果实品质的影响。结果表明:冬枣开花前搭覆防护网结合根剪显著抑制了冬枣的二次枝生长、枣吊数量、坐果率、花量及产量,并明显降低了果实中的维生素C和可溶性糖含量,但未造成果实农药残留。而坐果后覆网加根剪对二次枝、坐果率、产量的抑制效果较小,并对枣吊数量和花量无明显影响作用。虽然坐果后覆网果实中检测到了农药残留,但相比对照显著降低,未对果实品质带来不利影响。2种覆网方式均降低了冬枣的光合特性。综合分析认为,坐果后覆网与根剪相结合是提高果实品质的有效措施。The seven-year-old Chinese jujube trees were respectively covered with insect-proof net in different time to evaluate the influence of insect-proof net on the growth and fruit quality of jujube trees.The results showed that insectproof net in combination with root pruning significantly inhibited the growth of secondary branch,fruit shoot,fruiting rate,flower number and yield,and the same markedly decreased in Vitamin C and soluble sugar content,but had beneficial effect on pesticide residues prior to flowering,in comparison to control.As insect-proof net reinforced with root pruning was applied after flowering,the inhibition effects above were less or not found.Although pesticide residues were tested in fruits,their contents were clearly lower relative to control,when insect-proof net was covered after flowering.The two different covering nets were both declined the photosynthetic properties.It is concluded that insect-proof net in combination with root pruning after flowering may be the best choice for improvement in fruit quality of Chinese jujube trees.

关 键 词：冬枣 防护网 根剪 生理指标 果实品质 农残 

分 类 号：S665.1[农业科学—果树学]