摘要
由于玉米制种产量的降低，找出玉米制种田结实率低的原因，可以让制种基地更有效地健康发展，并提出相应有效防治措施。
Because metric seed yield in maize seed production decreased, find out the reasons of low seed setting rate, can make the production base of more effective and healthy development, and puts forward the corresponding prevention measures.
