大气压等离子体处理对黄瓜种子萌发及幼苗生长的影响

Effects of atmospheric pressure plasma on seed germination and seedling growth of cucumber

利用自制大气压等离子体装置对黄瓜种子进行处理，研究了不同电压的大气压等离子体处理对黄瓜种子萌发及幼苗生长的影响。试验结果表明：在5610～7310V电压范围内，等离子体处理对种子的影响较明显，与对照相比其发芽势、发芽率、发芽指数及活力指数显著提高，增幅分别为8．22％～52．94％、2．21％～9．55％、5．37％～35．32％、4．72％～104．72％，种子α-淀粉酶活性提高，电导率降低。同时等离子体处理也提高了幼苗的出苗速度，幼苗株高、茎粗、地上部鲜（干）质量、地下部鲜（干）质量、根体积也有不同程度的增加。幼苗的根活力、叶绿素含量、过氧化物酶活性分别比对照提高15．96％～34．37％、4．09％～27．04％、4．24％～16．58％。从本试验研究结果看，6290V和6630V电压处理效果较佳。

To better understand the effects of atmospheric pressure plasma on cucumber seed germination and seedling growth, the authors designed novel atmospheric pressure plasma equipment. The cucumber seeds were treated by the equipment with different voltages from 5610 V to 7310 V. The results show that the germination energy, germination percentage, germination index and vigor index were increased significantly. Compared with the control, they improved by 8.22%～52.94%, 2.21%～9.55%, 5.37%～35.32% and 4. 72%～104. 72%, respectively. In addition, the activities of alpha amylase were higher, and the conductivities of seeds were lower than those of the control. The plant height, stem diameter, fresh weight, dry weight, root volume, as well as root activity, chlorophyll content, and peroxidase activity were increased destinctively. The plasma treatments of 6290 V and 6630 V are better than other voltages in this experiment.