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Effects of Silicates to Control Powdery Mildew and on Grain Yield and Quality in Wheat (Triticum aestivum L.)
Author(s): 
Pages: 377-381
Year: Issue:  z1
Journal: Acta Agriculturae Boreali-Sinica

Keyword:  小麦白粉病硅酸盐旗叶光合性能产量品质;
Abstract: 为寻求安全、简便的白粉病化学防治技术,2010-2011年度以周麦16号为材料,研究了硅酸盐对小麦白粉病的防控效果,以及对生育后期叶片光合性能、子粒产量及品质的影响.结果指出,生育后期喷施硅酸钾和硅酸钠均可有效防止白粉病发生,尤以前者的效果为佳.在2 ~ 10 g/L质量浓度条件下,喷施相对较低浓度的硅酸盐,生育后期旗叶叶绿素含量提高9.1% ~28.6%,净光合速率提高12.3% ~39.0%,产量增加8.6% ~11.9%,穗粒数和千粒质量分别提高4.4% ~5.8%和4.1% ~5.8%,蛋白质含量提高1.5% ~4.9%.研究表明,喷施硅酸盐可有效防控白粉病,生产实践中宜采用硅酸钾,其质量浓度以2~5 g/L为宜.
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