不同硝酸钾用量对早熟禾生长性状的影响  

Effect of Different Amount of KNO_3 on Poa pratensis L.Growth Traits

作　　者：张吉立[1] 

机构地区：[1]大庆职业学院,黑龙江大庆163255

出　　处：《上海交通大学学报（农业科学版）》2016年第1期81-84,共4页Journal of Shanghai Jiaotong University(Agricultural Science)

基　　金：黑龙江省教育厅高职高专院校科学技术研究项目(12535011)

摘　　要：为了探索促进黑龙江大庆地区早熟禾（Poa pratensis L.）健壮生长的施肥方式,比较了施用KNO3复合肥0（对照）、116.50、138.20、161.30kg/hm2后早熟禾在不同时期的鲜重、含水量、叶绿素a、b和类胡萝卜素含量。结果表明,早熟禾鲜重随着KNO3施用量增加而增加,161.30kg/hm2处理整个试验期间均显著（P〈0.05）高于对照,植株含水量6、10月份116.50~161.30kg/hm2处理高于对照,7、8月161.30kg/hm2显著高于对照;整个试验期间,161.30kg/hm2处理叶绿素a、b和类胡萝卜素含量均显著高于对照。综合分析认为161.30kg/hm2处理可以显著改善早熟禾生长性状。Fresh weight,water content,chlorophyll a,b and carotenoid content of Poa pratensis L.are recorded and compared at different times after 0（control）,116.50,138.20,161.30kg/hm2 KNO3 fertilizer is applied to explore fertilization methods for a robust growth of Poa pratensis L.in Daqing,Heilongjiang.The result shows that the fresh weight ofPoa pratensis L.increases with KNO3 fertilizer,161.30kg/hm2 treatment is significantly higher（P〈0.05）than that of control group,the water content of Poa pratensis L.plant is higher than that of control group in 116.50 to 161.30kg/hm2 treatment when in June and October and the 161.30kg/hm2 treatment is significantly higher（P〈0.05）than that of control group in July and August.Throughout the test,161.30kg/hm2 treatment＇s chlorophyll a,b and carotenoid content are significantly higher than that of the control group.Therefore,it is safe to come to a comprehensive analysis,that is,the 161.30kg/hm2 treatment can significantly improve the bluegrass growth traits.

关 键 词：硝酸钾 早熟禾 色素 

分 类 号：S688.4[农业科学—观赏园艺]