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农学学报 ›› 2018, Vol. 8 ›› Issue (12): 79-83.doi: 10.11923/j.issn.2095-4050.cjas18060007

• 林学 园艺 园林 食用菌 • 上一篇    下一篇

氮磷钾肥配施对玉露香梨叶绿素含量及光合特性的影响

张晓伟,白牡丹,高鹏,郝国伟,杨盛,郭黄萍   

  1. 山西省农业科学院果树研究所,山西省农业科学院果树研究所,山西省农业科学院果树研究所,山西省农业科学院果树研究所,山西省农业科学院果树研究所,山西省农业科学院果树研究所
  • 收稿日期:2018-06-11 修回日期:2018-10-26 接受日期:2018-10-31 出版日期:2018-12-17 发布日期:2018-12-17
  • 通讯作者: 郭黄萍 E-mail:wmcw65
  • 基金资助:
    国家现代农业产业技术体系建设专项资金项目“国家梨产业技术体系太谷综合试验站”(CARS-28-28);山西省农科院攻关项目“玉露香梨周年养分积累变化规律研究”(YGG17029);山西省农业科学院农业科技成果示范推广项目(2017CGZH01)

‘Yuluxiang’Pear: Nitrogen, Phosphorus and Potassium Fertilizers Affect Chlorophyll Content and Photosynthetic Characteristics

白牡丹,高鹏,郝国伟,杨盛 and   

  • Received:2018-06-11 Revised:2018-10-26 Accepted:2018-10-31 Online:2018-12-17 Published:2018-12-17

摘要: 为研究氮磷钾肥配施对玉露香梨光合特性的影响效应,以10年生玉露香梨树为研究对象,使用便携式光合作用测定仪和叶绿素仪测定氮磷钾肥配施后玉露香梨叶片净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Cs)、胞间CO2(Ci)、水分利用率(WUE)及叶绿素含量(Chl)等光合指标。结果显示,氮、磷肥处理后梨树叶片Pn、WUE和Chl显著升高,氮肥处理组中Tr、Ci和Cs则显著降低,Pearson分析显示氮磷肥施用量与Pn、WUE和Chl呈正相关性,氮肥与Tr和Cs值呈负相关性显示氮可能通过影响Cs降低叶片的Tr减少叶片水分的散失;钾肥处理组中各指标均无显著变化。研究表明,施用氮肥和磷肥可显著提高水分利用率、促进叶绿素合成,并有效提升玉露香梨叶片光合生产效率。

关键词: 黄腐酸, 黄腐酸, 黄瓜 产量, 品质

Abstract: To study the effects of nitrogen, phosphorus and potassium fertilizers on photosynthetic characteristics of‘Yuluxiang’pear, taking 10- year- old‘Yuluxiang’pear trees as the study objects, we measured the net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Cs), intercellular CO2 concentration (Ci), water use efficiency (WUE) and chlorophyll content (Chl) after applying nitrogen, phosphorus and potassium fertilizers by using the portable photosynthesis determinator and chlorophyll meter. The results showed that: Pn, WUE and Chl in pear leaves after the nitrogen and phosphorus fertilizer treatment significantly increased, while Tr, Ci and Cs of the nitrogen fertilizer group significantly reduced; Pearson analysis showed a positive correlation between the application amount of nitrogen, phosphorus fertilizer and Pn, WUE, Chl, and a negative correlation between nitrogen fertilizer and Cs and Tr suggested that nitrogen might reduce the loss of leaf moisture by affecting Cs, reducing the Tr of the leaves; no significant differences between the control and the potassium fertilizer group were observed. In conclusion, the nitrogen and phosphate fertilizers could significantly increase the water use efficiency, promote the synthesis of chlorophyll, and improve the photosynthetic production efficiency in leaves of‘Yuluxiang’pear.

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