This research proposes the design of a multi‐corona discharge model to study the suitable electric field characteristics on sustaining a large stable plasma for microgreen seed treatment. The influence of an increase in the number of pin anode (N_P) and the gap distances between two adjacent pins anode (G_P) on electric field characteristics are studied by the finite‐element method. The results have indicated that the electric field characteristics from a large N_P with the 5 mm G_P are suitable to sustain the large stable air plasma because of the high virtual semi‐uniform electric field and the wider area of intense electric field stress. Then, the microgreen seeds are treated by the designed air multi‐corona discharge model on a copper cathode (CC) or water cathode (WC). The germination rates of plasma‐treated seeds on the CC and WC are higher than the ones of the control group of about 8% and 6% at 24 h cultivation time, respectively. The growth rates of plasma‐treated seeds on CC and WC are greater than the ones of the control group of about 3.5 and 2.5 times, respectively. It can be confirmed that both plasma‐treated cases have shown a positive effect on germination and growth enhancement.

中文翻译：

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多针阳极排列对电场分布特性的影响及其在微绿种子处理中的应用

这项研究提出了一种多电晕放电模型的设计，以研究维持大型稳定等离子体用于微绿种子处理的合适电场特性。采用有限元方法研究了针状阳极数量（N _P）的增加和两个相邻针状阳极之间的间隙距离（G _P）对电场特性的影响。结果表明，大的N _P与5 mm G _P的电场特性由于具有较高的虚拟半均匀电场和较宽的强电场应力，因此适用于维持较大的稳定空气等离子体。然后，通过设计的空气多电晕放电模型在铜阴极（CC）或水阴极（WC）上处理微绿种子。在CC和WC上等离子处理的种子在培养24 h时的发芽率分别比对照组高约8％和6％。等离子处理过的种子在CC和WC上的生长速率分别比对照组高约3.5倍和2.5倍。可以确认的是，两种血浆处理的病例均对发芽和生长促进具有积极作用。