摘要
以‘HAES741’澳洲坚果品种为试材,采用沙培试验,研究营养液不同磷水平(0、0.01、0.1、0.5、2.5、10 mmol/LH2PO4^-)下盆栽澳洲坚果幼树矿质元素(钾、磷、钙与镁)含量的变化。结果表明:随着供磷水平的升高,澳洲坚果幼树叶片、茎及根系的钾、磷含量在较低供磷水平(0~0.5 mmol/L)下增长较小或者无明显变化,但在较高供磷水平(2.5~10 mmol/L)时增幅较大,并且各器官的钾、磷含量均与不同供磷水平呈极显著性相关关系。不同供磷水平对茎的钙、镁含量影响不明显,随供磷水平的增加叶片的钙、镁含量显著降低,而根系的钙、镁含量则呈先下降后上升的趋势,均以0.1 mmol/L供磷处理含量较低。
Using macadamia variety ‘HAES741’ as materials, the sandy culture experiments were employed to investigate the changes of the contents of mineral elements (K, P, Ca and Mg) in the potted young trees of macadamia under different phosphorus levels (0, 0.01, 0.1, 0.5, 2.5 and 10 mmol/L H2PO4^-) of nutrient solution. The results indicated that with the increase of phosphorus application level, the elements contents of K and P in leaf, stem and root of the young macadamia trees had a small growth or no significant change under the condition of low phosphorus nutrition level (0-0.5 mmol/L), while those increased significantly when supplied with high phosphorus level (2.5-10 mmol/L). In addition, there were highly significant correlations between the K and P contents of different organs and the phosphorus nutrition level. The effect of different phosphorus levels on the Ca and Mg contents in stem was not obvious, but the contents of Ca and Mg in leaf decreased significantly as phosphorus level increased, while those in root reduced firstly and then increased, and their minimums occurred under the 0.1 mmol/L phosphorus level.
作者
杨为海
曾利珍
曾辉
万继锋
张汉周
邹明宏
陆超忠
朱文华
YANG Weihai;ZENG Lizhen;ZENG Hui;WAN Jifeng;ZHANG Hanzhou;ZOU Minghong;LU Chaozhong;ZHU Wenhua(South Subtropical Crops Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, Guangdong 524091, China;Key Laboratory of Tropical Fruit Biology, Ministry of Agriculture and Rural Affairs, Zhanjiang, Guangdong 524091, China;Hainan Tropical Crops Nutrition Key Laboratory, Zhanjiang, Guangdong 524091, China;Guizhou Subtropical Crops Institute, Xingyi, Guizhou 562400, China)
出处
《热带作物学报》
CSCD
北大核心
2019年第10期2034-2040,共7页
Chinese Journal of Tropical Crops
基金
广东省省级科技计划项目(No.2017A030303003)
中央公益性基本科研业务费专项项目(No.1630062016001,No.1630062017004)
关键词
澳洲坚果
磷
矿质元素
幼树
macadamia
phosphorus
mineral element
young tree
作者简介
杨为海(1978—),男,博士,副研究员,研究方向:果树栽培与生理;通信作者:朱文华,E-mail:645276988@qq.com。
