复合磁场处理对玉米种子萌发及幼苗生长发育的影响

为了探讨复合磁场处理对玉米生物学效应的影响， 采用 ZS-CⅢ型复合磁化处理机交变电流产生的复合磁场， 磁场强度为(A)250 mT和(B)300 mT的磁场分别处理玉米种子的方法， 以国审品种 ‘郑单958’ 、 河南省审定品种 ‘郑单 2201’ 、 以及杂交组合 12HY617×12HY741、 12HY647×12HY741、 12HY751×12HY601、 12HY576×12HY436、 12HY731×12HY592 为试验材料， 未处理的对应玉米种子为对照组(CK)， 研究复合磁场处理对玉米种子发芽及苗期生长的影响。结果表明： 复合磁场处理后玉米种子的发芽势、 发芽率均有提高， 最大提高幅度分别为 26.7%和 30.4%； 叶绿素含量比对照提高了 8.17%~28%；玉米苗期根、 茎和叶的干重、 鲜重、 根长均比对照有增加， 达到显著或极显著水平； 对苗期茎长影响不显著； 以上指标在 A、 B两种磁场强度处理之间差异不显著。因此适宜复合磁场处理可以显著提高玉米种子的发芽率、 发芽势和叶片中叶绿素的含量， 增加苗期根长、 根、 茎和叶的干重、 鲜重， 为玉米增产打下良好的基础。

Effect of Composite Magnetic Field on Seeds Germination and Seedling Growth and Development of Maize

The study aimed to discuss the effect of magnetic field on the biological effect of maize seeds. With the ZS-CⅢ composite magnetic processor compound produced by alternating current magnetic field, magnetic field intensities of 250 mT (A) and (B) 300 mT were used to deal with maize seeds respectively; and taking Zhengdan958’and‘Zhengdan2201’and 5 hybrids: 12HY617×12HY741, 12HY647×12HY741, 12HY751×12HY601, 12HY576 × 12HY436, 12HY731 × 12HY592 as test materials, the author studied the effects of different magnetic treatment doses on the germination indexes of the maize seeds. The results showed that maize seeds germination energy and germination rate were improved by the composite magnetic field treatment, the highest increase were 26.7% and 30.4%, respectively; the content of chlorophyll increased by 8.17%-28%; the weight of roots, stems and leaves and the length of roots at seedling stage were higher than that of CK. But the length of stems at seedling stage did not increase significantly. All the indexes did not show significant difference between A and B of magnetic treatments. So the magnetic field treatment could significantly improve the germination rate, germination potential of maize seeds and the content of chlorophyll in leaves, increase the length of roots, dry weight and fresh weight of stems and leaves at seedling stage. The study laid a good foundation for increasing the maize yield.