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大田玉米产量的高低,主要取决于玉米杂交种的纯度。如何提高玉米制种质量,使玉米种达到国家规定的纯度标准,栖霞市种子公司经过多年实践,总结出
The level of field corn production, mainly depends on the purity of corn hybrids. How to improve the quality of seed production in corn so that the corn species can meet the purity standards stipulated by the state? After years of practice, the seed company in Qixia City concluded