---

作 者 ：周勇军,李迪,陆永良,余柳青,陈铭学

期 刊 ：生态学报 2005年 25卷 7期 页码：1599~1603

关键词：水稻化感品种(系)；无芒稗；抑制率；化感指数；

Keywords:allelopathic rice varieties, Echinochloa crusgalli （L.） Beauv. var. mitis, inhibitory ratio, allelopathic index （AI）,

摘 要 ：以初筛获得的7份水稻品种为材料,用特征次生物质标记法在HPLC上测定化感指数AI值并结合田间小区试验进行双重评价与筛选,得到3份既具高化感指数又具较高田间抗草活性的水稻化感品种(系),它们是:我国台湾品种I-Kung-Pao、Parahainakoru和大陆品种HB-1。它们对无芒稗根长抑制率分别达57%、64%、55%,均超过50%;其化感指数分别是0.61、0.56、0.59,均与美国化感潜力品种PI312777的化感指数0.59相近;结果表明,水稻品种I-Kung-Pao、Parahainakoru和HB-1是我国宝贵的化感品种资源。

Abstract:Weeds in paddy are known to reduce rice yield severely. Use of herbicides for weed control has given rise to many problems related to environmental protection, herbicide-tolerant weeds and contamination of agricultural products, which endangered the sustainable development of agriculture. Since last decades, ecological methods for weed control have been developed. Research on rice allelopathy against weeds that started in late 1980‘s had been encouraging and developed fast. It is one of the first steps for ...

---