叶面喷施磷钾肥对金叶白蜡叶色及相关生理特性的影响  

Effects of foliage spraying of phosphorus and potassium fertilizer on leafcolor and physiological properties of Fraxinus

作　　者：陈芳[1] 缴丽莉 郭智涛[1] 贺磊[1] 常越霞[3] 白志英[4] 路丙社[1] 

机构地区：[1]河北农业大学园林与旅游学院,河北保定071000 [2]石家庄动物园管理处,河北石家庄050200 [3]河北农业大学林学院,河北保定071000 [4]河北农业大学生命科学学院,河北保定071000

出　　处：《河北农业大学学报》2013年第5期48-53,共6页Journal of Hebei Agricultural University

基　　金：河北省交通厅项目

摘　　要：为解决金叶白蜡叶片夏季明显返绿的问题,提高其夏季的园林观赏价值,本试验以金叶白蜡为试材,于2012年6-7月,研究了叶面喷施磷钾肥对其叶片色素含量、叶色参数(L*、a*、b*)和生理特性的影响。结果表明:(1)在单独喷施0.4%,0.8%,1.2%的硫酸钾肥或0.5%,1%的过磷酸钙肥时,利于叶绿素的合成、类胡萝卜素的积累,增大L*值和b*值,SOD、POD活性增大;喷施第25天时,喷施0.4%,0.8%,1.2%的硫酸钾肥处理的Car/Chl值分别比喷清水处理提高2.33%,3.49%,6.98%,其中喷施1.2%的硫酸钾肥处理显著高于喷清水处理(P<0.05);喷施0.5%,1%的过磷酸钙肥处理的Car/Chl值分别比喷清水处理提高36.36%和39.77%,差异显著(P<0.05)。(2)最适的钾肥和磷肥处理浓度分别为1.2%和1%,且1%磷肥的效果要好于1.2%钾肥。In order to solve the problem of leaf regreening phenomenon of Fraxinus Linn in summer and to increase its ornamental value, Fraxinus Linn was used to study pigment contents and leafcolor parameters（L^＊ , a^＊ , b^＊）and physiological properties by foliage spraying phosphorus and potassium fertilizers. The results showed that.. （1） Separate spraying 0.4%, 0.8% ,1.2% potassium fertilizer and separate spraying 0.5%, 1% phosphorus fertilizer could improve Car/Chl and increase leafcolor parameters（L^＊, b^＊ ）. Meanwhile, SOD activity and POD activity increased. On the twenty-fifth day, Car/Chl of spraying 0.40/00,0.8%, 1.2% potassium fertilizer was 2.33%, 3.49%, 6. 98% higher than that of CK and Car/Chl of spraying 0.5%,1% phosphorus fertilizer was 36.36%, 39.77% higher than that of CK, respectively. Meanwhile, Car/Chl of spraying 1.2 % potassium fertilizer and spraying 0.5 %, 1% phosphorus fertilizer were significantly （P〈0.05） higher than that of CK, respectively. （2） The most appropriate potassium and phosphorus fertilizers concentrations were 1.2 % and 1 %. 1% phosphorus fertilizer was better than 1.2% potassium fertilizer.

关 键 词：金叶白蜡 磷钾肥 色素含量 叶色参数 生理特性 

分 类 号：S687[农业科学—观赏园艺]