植物营养与肥料学报2012，Vol.18Issue(1)：169-175,7.
矮密栽培红枣树生物量及养分积累动态研究
Study on biomass and nutrient accumulation of Zizyphus jujube tree under dwarfing and high density culture
摘要
Abstract
Zizyphus jujube trees at age of five under dwarfing and high density cultivation are selected to study the dynamic changes of nutrient accumulation. The outdoor sampling and general analysis method indoor were adopted to carry out the research. The results slaow that the net increase of Zizyphus jujube tree biomass and the accumulated amount of dry fruit weight are 2090. 1 g and 1177.2 g respectively in annual period, which account for 56.3% of the annual net increase of biomass. The fastest accumulation period of Zizyphus jujube biomass is at the fruit expan- ding stage and the accumulate rate is 21.80 g/d. The N, P and K contents of the root system in 10 -20 cm soil lay- er are higher than those of other soil layers. The N, P and K contents of the taproots are 13.81 g/kg, 6. 41 g/kg and 11.61g/kg in 10-20 cm soil layer, and those of the lateral roots are 10. 20 g/kg, 4. 91 g/kg and 12. 90 g/kg. The accumulation amounts of whole Zizyphus jujube trees at various periods are in order： fruit harvest stage 〉 fruit expanding stage 〉 young fruit stage 〉 flower stage 〉 early bud stage. The sequence of the nutrient accumulation in the whole plants is K 〉 N 〉 P. To attain 1000 kg economic yield, Zizyphusjujube trees should uptake N 21.03 kg, P 8.60 kg and K 31.92 kg.关键词
矮密栽培/红枣树/生物量/养分积累Key words
dwarfing and high density cuhure/Zizyphus jujube tree/biomass/nutrient accumulation分类
农业科技引用本文复制引用
王泽,盛建东,陈波浪,李建贵..矮密栽培红枣树生物量及养分积累动态研究[J].植物营养与肥料学报,2012,18(1):169-175,7.基金项目
自治区科技厅支撑计划课题(201031103)、自治区科技厅条件平台建设项目(PT1009)、国家林业局重点推广项目(2010TK77)、新疆自治区土壤学、森林培育重点学科资助. （201031103）
