摘要
对不同品种、不同产地、不同采收期以及树体不同部位核桃坚果硬壳结构指标(缝合线紧密度、机械强度、密度)进行研究。结果表明:不同核桃品种间坚果硬壳结构指标均存在显著差异,泡核桃与普通核桃差异尤为显著;除个别品种外,不同产地核桃坚果硬壳密度及硬壳厚度存在显著差异;随着采收期延后,坚果硬壳缝合线紧密度逐渐下降,密度先上升后下降,机械强度呈上升趋势;树体阳面坚果硬壳密度显著小于阴面,机械强度显著大于阴面及内膛。品种、光照等是影响坚果硬壳结构的重要因素。
This paper studied nutshell structure indexes （seal grade,thickness,density and mechanical strength） of different walnut cultivars which were harvested from various production localities,in different harvesting periods and at different tree-crown locations.The results showed that there were significant differences in shell structure indexes among different cultivars,especially between Juglans regia and J.sigillata.Except for a few cultivars,there were significant differences in shell density and thickness of the same cultivars produced in different regions for all other cultivars.Seven different harvesting time was implemented in this study.From early to late of the harvesting time,the shell seal grade of walnuts descended gradually;the shell density ascended at the early period but descended afterwards;and the mechanical strength had an ascending trend.The shell mechanical strength of walnuts grown on the sunny side was higher than that of those grown on the shady side;but the shell density of walnuts grown on the sunny side was lower.In summary,the cultivars,irradiation and harvesting time were the key factors that influenced walnut shell structure.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2011年第4期70-75,共6页
Scientia Silvae Sinicae
基金
国家"十一五"科技支撑计划项目(2006BAD18B02)
河北省科学技术研究与发展计划项目(06220117D-1-2)
关键词
核桃
泡核桃
坚果
硬壳
影响因子
品种
产地
采收期
Juglans regia
Juglans sigillata
nut
nutshell
affecting factors
cultivar
production locality
harvesting periods
