肥料配施对地膜冬小麦叶面积及叶绿素含量的影响  

Effects of Proportional Fertilization on Leaf Area and Chlorophyll Content in Mulched Winter Wheat

作　　者：李科[1] LI Ke(College of Agriculture and Forestry,Long Dong University,Qingyang 745000,Gans)

机构地区：[1]陇东学院农林科技学院,甘肃庆阳745000

出　　处：《陇东学院学报》2018年第3期38-41,共4页Journal of Longdong University

基　　金：2015年庆阳市区域科技合作项目<庆阳市旱地水肥优化利用与调控技术研究>(KH2015-03)

摘　　要：以冬小麦"陇育4号"为试验材料,采用四元二次正交旋转组合设计,研究肥料配施对地膜冬小麦叶面积及叶绿素含量的影响。试验结果表明,不同的肥料配比和用量可以增大冬小麦旗叶叶面积,增加叶绿素含量,提高产量。处理4为冬小麦最佳施肥组合,其肥料配比为N∶P2O5∶K2O∶OM=1∶1.01∶0.11∶1.08,在孕穗期叶绿素含量(SPAD值)为59.1,较对照增加4.2;叶面积为23.3cm2,较对照增加6.2cm2;小麦产量为5602.5kg/hm2,较对照增产26.2%。The effects of leaf area and chlorophyll on proportional fertilization in mulched winter wheat are investigated to improve its production. ＂Longyu 4＂is used as experimental material. Quadratic orthogonal regressive rotation design with four factors is selected in this experiment. The result shows the different fertilizer proportion and dosage can increase the leaf area,the chlorophyll and production in mulched winter wheat. The processing 4 is the optimal combination of winter wheat fertilization,and its fertilizer ratio is N ∶ P_2O_5∶ K_2O ∶ OM = 1 ∶ 1. 01 ∶ 0. 11 ∶ 1. 08. During booting stage,its chlorophyll content（ 59. 1） is 4. 2 higher than CK. Also,its leaf area（ 23. 3） is 6. 2（ cm2） higher. Its yield is 5602. 5 kg/hm2. Compared with CK（ 4438. 5 kg/hm2）,the yield is improved by 26. 2%.

关 键 词：冬小麦 肥料配施 叶面积 叶绿素含量 

分 类 号：S-3[农业科学]