种子生产要实现两个目标即优质和高产,种子质量是基础,产量是结果。优质的种子首先应是合格的种子,合格的种子必须符合国家规定的质量标准。国家规定的种子质量标准包括种子的纯度、发芽率、水分、净度四项指标,其中纯度一项尤为重要,对玉米杂交种产量影响较大,其他三项决定种子的商品性和商品价值。种子的品质还应包括种子外观品质,如种子色泽、成熟度、饱满程度、容重、千粒重等。本人依据种子质量指标,分析影响种子质量四项指标的相关因素,论述了生 Seed production to achieve two goals that is high quality and high yield, seed quality is the foundation, yield is the result. High-quality seeds should first be qualified seeds, qualified seeds must meet the quality standards set by the state. The seed quality standard stipulated by the state includes four indexes of purity, germination rate, water content and clarity of the seed, of which purity is particularly important, which has a great influence on the yield of corn hybrids. The other three determine the commerciality and commodity value of the seeds. Seed quality should also include the appearance of seed quality, such as seed color, maturity, fullness, bulk density, grain weight and so on. Based on the indicators of seed quality, I analyzed the related factors that affect the four indicators of seed quality,