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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (3): 85-89.

所属专题： 玉米

• 农学 农业基础科学 • 上一篇    下一篇

不同P、K、Si肥对玉米苗期抗寒效果的研究

陈兵兵 石元亮 陈智文   

  • 收稿日期:2010-10-21 修回日期:2010-11-23 出版日期:2011-02-05 发布日期:2011-02-05
  • 基金资助:

    国家科技支撑三江平原白浆土农田土壤改良与水肥调控技术集成与释放

Studies on the Effect of Different P, K, Si Fertilizer of Corn Cold-resistant

  • Received:2010-10-21 Revised:2010-11-23 Online:2011-02-05 Published:2011-02-05

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摘要：

此文突破常规只重施N、P、K肥的情况，通过施用不同水平的P、K、Si肥在玉米苗期低温环境下进行盆栽试验，再通过室内分析方法进行初步研究，确定不同的肥料水平对玉米苗期各项抗寒指标的影响。结果表明，低温胁迫下并且氮肥含量固定时，施用P肥，使超氧化物歧化酶（SOD）的活性逐渐增强，可以减少细胞膜透性，增加干物重；施用K肥可以降低电解质的平均渗出率，提高可溶性糖含量；而Si肥能提高叶绿素含量，降低绝对电解质渗出量。从而得出不同用量的磷肥、钾肥和硅肥对玉米可以起到抗寒作用。

关键词: 雄性比格犬, 雄性比格犬

Abstract:

This breakthrough was conventional only heavy use N, P, K fertilizer, through the effects of different levels of P, K, Si fertilizer in the corn seedling cryogenic environment pot experiment, again through the laboratory analysis method was preliminarily studied, identified the different fertilizer levels on the corn seedling various cold-tolerance index effects. The results showed that low temperature stress and nitrogen content, application of P fertilizer fixed, superoxide dismutase (SOD) activity gradually strengthened, which could reduce the membrane permeability, increased dry matter weight. Application of K fertilizer could reduce the average rate of electrolyte, improved oozy and content of soluble sugar. And Si fertilizer could improve the chlorophyll content and reduce absolute electrolyte leakage quantity. Thus at the different content of P and K and Si fertilizer could play a role of corn cold-resistant.