WANG Bin,WANG Yafei,JIANG Yuan,et al.Effects of Different Cultivation Modes on Photosynthetic and Chlorophyll Fluorescence Characteristics of Korla Fragrant Pear With Branch Blight[J].Northern Horticulture,2023,(08):32-37.[doi:10.11937/bfyy.20223410]
不同栽培模式对患枝枯病库尔勒香梨树光合及叶绿素荧光特征的影响
- Title:
- Effects of Different Cultivation Modes on Photosynthetic and Chlorophyll Fluorescence Characteristics of Korla Fragrant Pear With Branch Blight
- Keywords:
- Korla fragrant pear; shoot blight; photosynthetic characteristics; fluorescence of chlorophyll
- 文献标志码:
- A
- 摘要:
- 以库尔勒香梨为试材，选用省力化栽培模式和普通栽培模式2种栽培模式下的梨园，研究了2种栽培模式对于患有枝枯病梨树的光合作用以及叶绿素荧光的影响，以期为香梨枝枯病的预防及合理化、高质量种植提供参考依据。结果表明:在气孔导度和蒸腾速率上，省力化栽培明显高于普通栽培模式。在净光合速率方面，08:00—12:00省力化栽培远高于普通栽培模式，12:00之后省力化栽培模式下降与普通栽培模式持平，胞间二氧化碳浓度却是相反的情况。在叶绿素荧光方面，荧光动力学曲线省力化栽培高于普通栽培，荧光参数方面，除初始荧光 (Fo)以及单位面积热耗散掉的能量(DLo/CSo),普通栽培要高于省力栽培，其它最大荧光(Fm)、可变荧光(Fv)、PSⅡ最大光能转化效率(Fv/Fm)、PSⅡ潜在光化学活性(Fv/Fo)、单位面积吸收的光能(ABS/CSo)、单位面积捕获的光能(TRo/CSo)以及单位面积电子传递的量子产额(ETo/CSo)均是省力化栽培下的值更高。因此省力化栽培模式无论是在光合特征上和叶绿素荧光方面均要优于普通栽培模式。
- Abstract:
- Taking Korla fragrant pear as materials,labor-saving cultivation mode and common cultivation mode were selected to study the effects of cultivation mode on photosynthesis and chlorophyll fluorescence of pear trees suffering from blight disease，in order to provide reference for the prevention,rationalization and high quality planting of pear with stem blight.The results showed that stomatal conductance and transpiration rate of labor-saving cultivation were significantly higher than those of ordinary cultivation.In terms of net photosynthetic rate,from 08:00 to 12:00,the labor-saving cultivation mode was much higher than that of the common cultivation mode.After 12:00,the labor-saving cultivation mode declined to the same level as the common cultivation mode,while the intercellular carbon dioxide concentration was the opposite.In terms of chlorophyll fluorescence,the labor-saving cultivation of fluorescence kinetic curve was higher than that of the common cultivation.In terms of fluorescence parameters,except the initial fluorescence (Fo) and the energy dissipated per unit area (DLo/CSo),the common cultivation was higher than that of the labor-saving cultivation.Other maximum fluorescence (Fm),variable fluorescence (Fv),PSⅡ maximum light conversion efficiency (Fv/Fm),PSⅡ potential photochemical activity (Fv/Fo),light energy absorbed per unit area (ABS/CSo),light energy captured per unit area (TRo/CSo) and quantum yield of electron transport per unit area (ETo/CSo) were all higher under labor-saving cultivation.Therefore,the labor-saving cultivation mode is superior to the common cultivation mode in terms of photosynthetic characteristics and chlorophyll fluorescence.
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备注/Memo
第一作者简介：王斌（1997-），女，硕士研究生，研究方向为荒漠化防治与景观生态。E-mail：2034009903@qq.com.责任作者：梁继业（1976-），男，博士，教授，现主要从事荒漠化防治与景观生态等研究工作。E-mail：Ljy_123123@126.com.基金项目：第二师铁门关市科技计划资助项目（2020NYGG01）；兵团财政科技计划资助项目（2022CB005-01，2021AB022）;塔里木盆地生物资源保护利用兵团重点实验室开放课题资助项目（BRZD2103）。收稿日期：2022-08-21