干旱胁迫下保水剂对澳洲坚果生长及水分特征参数的影响  

Effects of Hydrogel on Macadamia Growth and Its Moisture Characteristic Parameters under Drought Stress

作　　者：宫丽丹[1] 倪书邦[1] 贺熙勇[1] 柳觐[1] 马静[1] 肖晓明[1] GONG Lidan;NI Shubang;HE Xiyong;LIU Jin;MA Jing;MA Jing(Yunnan Institute of Tropical Crops, Jinghong 666100, China)

机构地区：[1]云南省热带作物科学研究所,云南景洪666100

出　　处：《热带农业科技》2017年第1期17-19,共3页Tropical Agricultural Science & Technology

基　　金：农业部热带作物种质资源保护项目(16RZZY-07);农业部热作技术试验示范项目(15162130106232019);云南省科研院所技术开发研究专项项目(2012CF014);云南省热带作物科技创新体系建设专项项目(RF2016-6)

摘　　要：以‘HAES788’澳洲坚果品种为供试材料,采用盆栽的方式模拟自然干旱,研究土壤干旱过程中保水剂对澳洲坚果植株生长、叶绿素及叶片水分特征参数的影响。结果表明:在干旱胁迫下,无论施用保水剂与否,随着水分胁迫时间延长,植株生长均受到了抑制;保水剂处理的植株,其组织密度增加,叶片饱和亏缺小,叶片相对含水量增加;叶绿素a和叶绿素b和总叶绿素含量都显著增加。Potted Macadamia cultivar‘ HAES788’ was simulated to a drought environment to study the effect of water-retaining agent on growth, chlorophyll content and leaf water characteristic parameters of Macadamia tree. The results showed that the longer the water stress lasted, the more restrained the growth would be. However, there was significantly increased in tissue density, leaf relative water content, chlorophyll a, chlorophyll b and total chlorophyll content with less leaf water saturation deficit under water-retaining agent treatment.

关 键 词：澳洲坚果 保水剂 干旱胁迫 水分特征参数 

分 类 号：S664[农业科学—果树学]