盐碱环境下火龙果生长过程中果实主要营养元素含量变化  

The Variation of Main Nutrient Element Contents in the Fruit of Pitaya during the Development under Saline Conditions

作　　者：杨道富[1] 林旗华[2] 谢鸿根[1] 蔡秋英 陈源[1] 卓玉辉 

机构地区：[1]福建省农业科学院农业工程技术研究所,福建福州350003 [2]福建省农业科学院果树研究所,福建福州350013 [3]福建省莆田市涵江区农业局,福建莆田351111 [4]莆田新闽现代农业有限公司,福建莆田351111

出　　处：《热带作物学报》2012年第11期1954-1959,共6页Chinese Journal of Tropical Crops

基　　金：科技部科技基础性工作专项(No.2007FY110500-04)--福建省沿海地区抗旱耐盐碱优异性状农作物种质资源调查

摘　　要：在盐碱环境下,对白肉火龙果果实生长过程中氮、磷、钾、钙、镁和钠等营养元素的动态变化进行观察、测定和分析。结果表明:氮、磷、钾和镁含量的变化趋势相似,总体呈"倒N"型变化,钙含量的变化在整个生长过程中始终保持下降趋势,钠含量波动较大。在不同生长阶段,氮、磷、钾、钙、镁和钠等营养元素含量变异系数较大,从27.60%～43.52%。果实中氮、磷、钾、钙、镁和钠含量累积的峰值均出现在花后30 d,分别为682.22、83.11、993.92、55.73、107.04和11.94 mg,在花后6～15 d及26～30 d累积速率较快。该研究结果为指导盐碱环境下火龙果的高效栽培利用提供参考。In this study, the variation of N, P, K, Ca, Mg and Na contents in Pitaya fruit were observed and analyzed during the development stages under saline conditions. The results revealed the contents of N, P, K, and Mg all displayed a ＇inverted N＂ variation, while the Ca content showed a unilateral down trend and the Na content showed a comparatively large fluctuation. In seven different development stages of Pitaya fruit, the variation coefficient of N, P, K, Ca, Mg and Na were from 27.60% to 43.52%. The maximum contents of N, P, K, Ca, Mg and Na per single Pitaya fruit all appeared at 30 d after flowering, were 682.22, 83.11, 993.92, 55.73, 107.04 and 11.94 mg respectively. The accumulation rate of N, P, K, Ca, Mg and Na increased faster during 6～15 d after flowering and 26-30 d after flowering. Our data provided clues for guiding effective cultivation and utilization of Pitava in saline soils.

关 键 词：盐碱环境 火龙果 生长 营养元素 动态变化 

分 类 号：S668.9[农业科学—果树学]