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中国农学通报

中国农学通报 ›› 2014, Vol. 30 ›› Issue (21): 89-94.doi: 10.11924/j.issn.1000-6850.2013-3220

所属专题： 玉米

• 农学 农业基础科学 • 上一篇    下一篇

水肥耦合对夏玉米不同生育期叶面指数和生物量的影响

温立玉 宋希云 刘树堂   

  • 收稿日期:2013-12-10 修回日期:2014-02-15 出版日期:2014-07-25 发布日期:2014-07-25
  • 基金资助:
    山东省现代农业产业技术体系创新团队（玉米）项目“十二五”国家科技支撑计划粮丰工程“鲁东丘陵区小麦玉米稳产增效技术集成研究与示范”(2011BAD10B09-03)，“鲁东丘陵干旱区小麦玉米节水稳产生产技术集成与示范研究”(2012AD04B05-03)，“鲁东丘陵区小麦玉米水肥自然资源高效利用综合技术集成与示范研究”(2013BAD07B06-03)；国家农业科技成果转化资金项目“玉米新品种‘青农8号’及其栽培技术示范与推广”(2012GB2C600260)；山东省旱作节水创新团队。

Effect of Water and Fertilizer Coupling on Foliar Index and Biomass at Different Growth Stages of Summer Maize

  • Received:2013-12-10 Revised:2014-02-15 Online:2014-07-25 Published:2014-07-25

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摘要： 为了探明水肥耦合对玉米生长发育的影响，以‘青农8号’玉米品种为试验材料，研究了不同生育期玉米的叶面积指数及其生物量。结果表明：水肥耦合对夏玉米叶面积指数(LAI)的影响很大，灌水是对其影响作用最大的因素，其次是施氮肥和施钾肥。过高的水肥施用量都会引起夏玉米LAI的降低。氮钾施肥量均在2水平时，灌水使LAI最大提高47.46%；水钾均为2水平时，施氮肥使LAI提高的最大值达到37.75%；水氮均在2水平时，施钾使LAI最大提高9.62%。根干重、次生根条数、根平均直径、根系总体积、根系总表面积、根系总长与地上部的籽粒重、苞叶及穗轴重、茎杆重、叶干重均呈显著或极显著相关关系，其中籽粒重和根干重的相关系数达0.97**。合理的水肥耦合对于减少水资源浪费，提高水肥利用率具有重要的理论和实践意义。

关键词: 高效液相色谱, 高效液相色谱, 五倍子提取物, 没食子酸, 鞣花酸

Abstract: The leaf area index (LAI) and leaf biomass was studied in the growing period of maize which variety was‘Qingnong 8’in order to investigate the effect of water-fertilizer coupling on the growth of maize. The results showed that the LAI was significantly affected by water-fertilizer coupling, and irrigation was the most important factor then was nitrogen fertilizer and potassium fertilizer. However, the LAI could decrease by more irrigation and fertilization. The LAI could increase 47.46% by irrigation in N2K2 treatments. Moreover, the highest increase in LAI was 37.75% by nitrogen fertilizer treatment, while the LAI increased 9.62% by potassium fertilizer in W2N2 treatments. There were positive correlations between the root characteristics and the weight of seed, leaf and stalk weight. The correlation coefficient of the weight of seed and root was 0.97. It was important for the theory and practice in improving the water-fertilizer utilization rate and reducing the waste of water resource by suitable water-fertilizer coupling management.