中文摘要：

杂草稻作为普通野生稻和栽培稻之间遗传因子相互渐渗而形成的稻种类型，一方面在稻田中有杂草性危害，另一方面它从普通野生稻中继承且在长期的野生环境中积累了众多非生物胁迫抗性的遗传因子，因此在水稻改良特别是在抗性育种上是优良的稻种资源库．

英文摘要：

The weedy rice was grown by the gradually permeating of genetic genes between common wildrice and cultivatable rice. It had the weedy harm to the rice in field, on the other hand,its the genes of abiotic stress resistance inherited from common wildrice and the wildness surroundings for long time became good seed rice material bank for rice improving, especially for resistance breeding.