论文部分内容阅读
杂交玉米制种产量不高,影响的不仅仅是制种农户和制种单位的经济效益,还影响制种基地的稳定,影响杂交种的推广速度和推广面积,而且影响种子的市场竞争能力及品种的使用寿命等。现实中有这样的例子,杂交种的优势很强,表现很好,但因其制种产量太低,致使杂交种推而不广,甚至因难以制种而造成良种夭折。制种产量不高一直是困扰制种农户、制种单位、种子部门的一个难题。因此,有必要对制约制种产量提高的因素进行客观分析,并采取相应的技术对策,尽可能提高制种产量。
Hybrid corn seed production is not high, affecting not only the economic benefits of seed farmers and seed production units, but also affect the stability of seed production base, affecting the promotion of hybrids and promote the area, but also affect the market competitiveness of seeds and Variety of life and so on. In reality, there are such examples. Hybrids have very strong advantages and perform well. However, because hybrid seed production is too low, hybrids are not widely promoted, and even breeding is difficult due to difficult breeding. Seed production is not high has been troubled by seed farmers, seed production units, the seed sector a problem. Therefore, it is necessary to objectively analyze the factors which restrict the increase of seed production, and adopt appropriate technical measures to maximize the seed production.