摘要： 京东板栗是品质比较优良的栗种,也是北京地区重要的干果,目前对其矿质元素营养特性了解得很少。本研究通过定期采取营养枝和结果枝叶片样品,分析其N、P、K、Ca、Mg、B、Zn、Fe、Mn、Cu含量,旨在研究京东板栗矿质营养元素含量及其变化特征,为板栗营养调控,提高产量,改善品质提供科学依据。研究结果表明:营养枝与结果枝叶片的P、K、Cu、Mg含量差异很小,且几乎不随植株生长发育而变化;其他营养元素含量及其变化,随叶片部位和植株生长发育时期而异,一般都表现为逐渐增加的趋势,特别是Zn、Mn含量几乎直线增加。营养枝叶片的N、Zn、Fe的含量,在生殖生长时期高于结果枝,而B的含量则相反;营养枝叶片含Ca量总是低于结果枝叶片,而Cu正好相反。

关键词: 板栗, 营养枝叶片, 结果枝叶片, 矿质营养元素

Abstract: Jingdong chestnut,as high quality chestnut fruit,is the major nut fruit in Beijing region .However,there islittle information about mineral nutrition of the chestnut .We sampled leaves from both nutrition and fruit branches and analyzedthe concentrations of N,P ,K ,Ca ,Mg ,B,Zn,Fe ,Mn,Cu .The objectives included understanding the characters ofthese nutrient concentration and their seasonal changes,and supplying with fundamental data for further managing plantnutrition,enhancing yield and improving fruit quality .The results showed that the concentrations of P ,K ,Cu andMg weresimilar in the leaves from nutrition and fruit branches and changed little during plant growth .However,concentrations ofother mineral elements changed with plant development and leaves .In general,these nutrient concentrations increased withplant growth .Particularly,the concentrations of both Zn and Mn were of linear enhancement during plant growth .Theleaves of nutrition branch in fruiting period had higher contents of N,Zn and Fe,but lower B,than that of fruit branch .However,in whole growth season,the leaves in nutrition branch always contained lower Ca but higher Cu than that in thefruit branch .

Key words: Chestnut, Leavesofnutritionbranch, Leavesoffruitbranch, Nutritionelements

中图分类号: 

• S143.7