施钾量对花生光合特性、干物质积累及钾素利用效率的影响  

Effects of Potassium Application Rate on Photosynthetic Characteristics,Dry Matter Accumulation and Potassium Use Efficiency of Peanut

作　　者：李忠[1,2,3] 江立庚[1] 唐荣华[2,3] 熊发前[2] 唐秀梅[2] 贺粱琼[2] 

机构地区：[1]广西大学,广西南宁530007 [2]广西农业科学院经济作物研究所,广西南宁530004 [3]广西作物遗传改良生物技术重点开放实验室,广西南宁530007

出　　处：《贵州农业科学》2016年第2期52-55,共4页Guizhou Agricultural Sciences

基　　金：国家现代农业产业技术体系建设专项资金"CARS-14-华南区栽培岗位";广西青年基金项目"花生抗青枯病基因分子标记及基因定位"(桂科青0991016);广西农业科学院科技发展基金项目"施磷;施钾量对花生野生品种和栽培品种光合特性及干物质积累的影响"(2015JZ110)

摘　　要：为筛选出高钾营养吸收利用的花生种质,以花生野生种A.correntina与栽培种桂花22为研究材料,通过测定其功能叶片的叶绿素含量、净光合速率、单株含钾量、钾素利用效率及干物质产量等相关指标,分析不同施钾量对花生光合特性及干物质累积的影响,研究不同花生品种钾吸收利用效率的差异机制。结果表明,施钾能显著提高桂花22的光合速率、叶绿素含量和干物质产量;施钾量对花生野生种A.correntina的光合特性及干物质积累影响小,施钾处理间的叶片叶绿素含量在各时期差异小,在栽培后96d、120d叶绿素含量和净光合速率下降幅度小,保持较高含量。花生野生种A.correntina的单株含钾量和钾素利用效率在不同施钾处理间变幅低于桂花22。To screen peanut germplasms with high potassium use efficiency and uptake efficiency,through the determination of peanut function leaf of chlorophyll content,net photosynthetic rate,potassium content per plant,potassium use efficiency and dry matter production,the authors studied the effects of different potassium application rate on photosynthetic characteristics and dry matter accumulation of peanut wild species A.correntinaand cultivated variety Guihua 22.Results：Potassium treatments can significantly improve chlorophyll content,dry matter weight and photosynthetic rate of Guihua22.Compared with Guihua22,there is no significant effect of different potassium application rate on photosynthetic characteristics and dry matter accumulation of A.correntina.There is higher levels of chlorophyll content and photosynthetic rate at 96 dand 120dafter planting in A.correntin.A.correntina had a small response to the change of plant potassium content and potassium use efficiency among different potassium treatments.

关 键 词：花生 钾素利用效率 光合特性 干物重 

分 类 号：S565.2[农业科学—作物学]