论文部分内容阅读
杂交稻纯度的高低与产量直接相关。生产上由于对杂交稻的纯度缺乏了解而盲目用种造成损失的例子甚多。试验和大田调查证实,大田中各类杂株的总和超过5%,就会造成显著减产。因此,对各年生产的杂交稻种子及时而准确地进行纯度鉴定就显得十分重要。同时,通过鉴定,了解杂交稻中杂株类型的构成,分析各类杂株产生的原因,提出相应的防杂保纯措施,又能大大促进制种技术的提高。1980年以前,我县的纯度鉴定工作均在海南进行,从1983年开始,就在本地鉴定,经5年的实践,该项工作已逐步得到完善。
The purity of hybrid rice is directly related to the yield. There are many examples of blind loss of production due to a lack of understanding of the purity of hybrid rice. Experiments and field surveys confirmed that the total amount of various types of contaminated plants in the field exceeds 5%, resulting in a significant decrease in production. Therefore, the annual production of hybrid rice seeds in a timely and accurate purity identification is very important. At the same time, through the identification, understand the composition of hybrid plants in hybrid rice types, analysis of the causes of various types of hybrid strains, put forward appropriate measures to prevent impurities, but also can greatly promote the improvement of seed production techniques. Before 1980, the purity appraisal of our county was conducted in Hainan. Since 1983, it has been identified locally. After five years of practice, this work has been gradually improved.