钾肥对中、弱筋小麦花后光合特性的影响  

Effects of Different Application Potassium on Plant Photosynthetic Characteristicsin Medium-gluten Wheat and Weak-gluten Wheat

作　　者：孙国华 滕怀丽 

机构地区：[1]上海跃进现代农业有限公司,上海202171

出　　处：《金陵科技学院学报》2017年第2期60-64,共5页Journal of Jinling Institute of Technology

摘　　要：为了进一步明确钾肥调控中、弱筋小麦产量形成的生理基础,研究在不同磷水平上,钾肥对中、弱筋小麦花后光合面积、剑叶光合能力的影响。结果表明:在一定施磷基础上,合理施钾肥能显著延缓中、弱筋小麦花后单茎绿叶面积的减少,提高花后剑叶SPAD值和灌浆中后期剑叶净光合速率,提高植株灌浆中后期抗衰老能力,进而提高产量。In order to further clarify the physiological basis of the formation of medium and weak gluten wheat,the paper studied the effects of potassium fertilizer on photosynthetic area and photosynthetic capability of flag leaf at different levels of phosphorus after flowering.The results showed that,on the basis of a certain phosphorus,reasonable application of potassium fertilizer could significantly slow down the reduction of the leaf area of single stems after weaning,weak gluten wheat.The SPAD value and the net photosynthetic rate could improve the ability of anti-aging in the late grain filling,and then increase the yield.

关 键 词：中筋小麦 弱筋小麦 钾肥 光合面积 净光合速率 

分 类 号：S512.1[农业科学—作物学]