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当前位置: 首页 > 文章 > 土壤施钾对冬枣幼苗生长、养分含量和光合特性的影响 经济林研究 2014 (3) 74-77
Position: Home > Articles > Effects of potassium applied into soil on growth, nutrient contents and photosynthetic characteristics in Zizyphus jujuba seedling Nonwood Forest Research 2014 (3) 74-77

土壤施钾对冬枣幼苗生长、养分含量和光合特性的影响

作  者：
王清华;张兰英;马丙尧;杜振宇
单  位：
济南市北郊国有林场;山东省林业科学研究院
关键词：
冬枣;KCl;生物产量;营养状况;光合特性
摘  要：
为了了解冬枣在土壤轻度盐胁迫下对外源钾的响应,采用盆栽试验方法,探讨了土壤施钾对冬枣幼苗生物产量、养分含量以及叶片光合特性的影响,以期对冬枣合理施用钾肥提供理论依据。结果表明,施用适量KCl可以显著提高冬枣的生物产量,同时增加叶片中的N、P、K含量,改善树体营养状况,但过量施钾会抑制冬枣生长。适量施用外源K+可提高叶片中的K+/Na+,在一定程度上减轻盐胁迫造成的离子失衡,增强叶片的光合性能,改善叶片的生理功能。
译  名：
Effects of potassium applied into soil on growth, nutrient contents and photosynthetic characteristics in Zizyphus jujuba seedling
作  者：
WANG Qing-hua;ZHANG Lan-ying;MA Bing-yao;DU Zhen-yu;Shandong Academy of Forestry;State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences;Jinan Northern Outskirt Forest Farm;
关键词：
Zizyphus jujuba;;KCl;;biological yield;;nutrient status;;photosynthetic characteristics
摘  要：
In order to learn the responses of Zizyphus jujuba to applying potassium in slightly salted soil and provide a theoretical basis for rational potassium fertilization, the effects of potassium applied into soil on biological yield, nutrient contents and leaf photosynthetic characteristics in Z. jujuba were studied by a pot experiment. The results show that the appropriate application of KCl can signifi cantly enhance the biological yield in Z. jujube, as well as the contents of N, P, and K are increased, so nutrient status of tree is improved. However, excessive application can inhibit growth in Z. jujuba. Reasonable application of exogenous K+ can increase K+/Na+ in leaf, alleviate ion imbalance caused by salt stress to some extent, enhance photosynthetic characteristics, and improve physiological function of leaf.

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