湖北农业科学
湖北農業科學
호북농업과학
Hubei Agricultural Sciences
2015年
17期
4208-4210,4211
,共4页
段珍珍%王占林%贺康宁%罗龙
段珍珍%王佔林%賀康寧%囉龍
단진진%왕점림%하강저%라룡
枸杞%土壤含水量%光合速率%水分利用率
枸杞%土壤含水量%光閤速率%水分利用率
구기%토양함수량%광합속솔%수분이용솔
Chinese wolfberry%soil water content%photosynthetic rate%water use efficiency
研究了土壤水分含量(SWC)对青海高原北方枸杞[Lycium chinense Mill. var. potaninii(Pojark.) A. M. Lu]、黑果枸杞(Lycium ruthenicum Murr.)和中宁枸杞(Lycium barbarum L.)的光合速率(Pn)、蒸腾速率(Tr)、水分利用率(WUE)等光合因子的影响。结果表明,在设定的SWC下,3种枸杞的Pn、Tr、WUE的变化趋势基本一致,但各自的变化幅度不同。中宁枸杞、北方枸杞、黑果枸杞的Pn最高时的SWC分别为21.78％、16.57％、17.45％,WUE最高时的SWC分别为14.01％、10.57％、13.03％；Tr最高时所对应的SWC分别为21.02％、18.98％、16.96％。当中宁枸杞SWC在10％~14％之间,北方枸杞SWC在11％~13％之间,黑果枸杞SWC在11％~17％之间,既可维持它们较高的Pn,又能保证较高的WUE；3种枸杞的水合补偿点分别为2.51％、4.62％和4.07％,说明3种枸杞都具有较强的耐旱能力,其中中宁枸杞耐土壤干旱能力最强。水分变化对黑果枸杞的Pn和Tr变化影响幅度最小,即黑果枸杞对SWC的变化及水分胁迫有较强的忍耐力。
研究瞭土壤水分含量(SWC)對青海高原北方枸杞[Lycium chinense Mill. var. potaninii(Pojark.) A. M. Lu]、黑果枸杞(Lycium ruthenicum Murr.)和中寧枸杞(Lycium barbarum L.)的光閤速率(Pn)、蒸騰速率(Tr)、水分利用率(WUE)等光閤因子的影響。結果錶明,在設定的SWC下,3種枸杞的Pn、Tr、WUE的變化趨勢基本一緻,但各自的變化幅度不同。中寧枸杞、北方枸杞、黑果枸杞的Pn最高時的SWC分彆為21.78％、16.57％、17.45％,WUE最高時的SWC分彆為14.01％、10.57％、13.03％；Tr最高時所對應的SWC分彆為21.02％、18.98％、16.96％。噹中寧枸杞SWC在10％~14％之間,北方枸杞SWC在11％~13％之間,黑果枸杞SWC在11％~17％之間,既可維持它們較高的Pn,又能保證較高的WUE；3種枸杞的水閤補償點分彆為2.51％、4.62％和4.07％,說明3種枸杞都具有較彊的耐旱能力,其中中寧枸杞耐土壤榦旱能力最彊。水分變化對黑果枸杞的Pn和Tr變化影響幅度最小,即黑果枸杞對SWC的變化及水分脅迫有較彊的忍耐力。
연구료토양수분함량(SWC)대청해고원북방구기[Lycium chinense Mill. var. potaninii(Pojark.) A. M. Lu]、흑과구기(Lycium ruthenicum Murr.)화중저구기(Lycium barbarum L.)적광합속솔(Pn)、증등속솔(Tr)、수분이용솔(WUE)등광합인자적영향。결과표명,재설정적SWC하,3충구기적Pn、Tr、WUE적변화추세기본일치,단각자적변화폭도불동。중저구기、북방구기、흑과구기적Pn최고시적SWC분별위21.78％、16.57％、17.45％,WUE최고시적SWC분별위14.01％、10.57％、13.03％；Tr최고시소대응적SWC분별위21.02％、18.98％、16.96％。당중저구기SWC재10％~14％지간,북방구기SWC재11％~13％지간,흑과구기SWC재11％~17％지간,기가유지타문교고적Pn,우능보증교고적WUE；3충구기적수합보상점분별위2.51％、4.62％화4.07％,설명3충구기도구유교강적내한능력,기중중저구기내토양간한능력최강。수분변화대흑과구기적Pn화Tr변화영향폭도최소,즉흑과구기대SWC적변화급수분협박유교강적인내력。
The soil water content (SWC)’s influences on photosynthetic rate (Pn), transpiration rate (Tr), water use efficien-cy (WUE) of Lycium chinense Mill. var. potaninii (Pojark.) A. M. Lu, Lycium ruthenicum Murr. and Lycium barbarum L. were studied. Results showed that, with the changes of soil water content, Pn, Tr, WUE of three kinds of Chinese wolfberry almost had the same change trends, but the rangeability were different. When Pn was the maximal, the L. barbarum, L. chinense Mill. var. potaninii(Pojark.) A. M. Lu, L. ruthenicum Murr.’s SWC were 21.78%, 16.57% and 21.78%, respective-ly. SWC (Tr=Max) were 21.02%, 18.98% and 16.96%. When WUE was the maximal,their SWC were 14.01%, 10.57% and 13.03%, respectively. When SWC of L. chinense Mill. var. potaninii (Pojark.) A. M. Lu was between 10%~14%, the SWC of L. chinense between 11%~13%, the SWC of L. ruthenicum Murr. between 11%~17%, not only their Pn were higher but also their WUE was higher; Their hydration compensation points were 2.51%, 4.62% and 4.07%, respectively, it was con-cluded that the drought tolerance of three kinds of Chinese wolfberry was strong, especially for L. chinense Mill. var. potaninii (Pojark.) A. M. Lu. The influences of water content on L. ruthenicum Murr’s Pn and Tr were the least, so which had strong water stress tolerance.
