论文部分内容阅读
近几年来,湘北地区直播稻发展较快,2010年,仅常德市鼎城区直播稻面积就达6万公顷,占该区水稻种植面积的二分之一。自生稻在直播稻田中大量发生,对直播稻的产量、品质造成了较大的影响,已成为水稻高产稳产的严重障碍。此外,由于自生稻的形态、生育特性与栽培稻相似,生产中常被农户误认为是种子质量问题,时常引起纠纷。因此,正确认识自生稻的发生规律,切实搞好综合防治措施,严格控制自生稻,对稳定发展水稻生产具有重大意义。
In recent years, the direct seeding rice in the northern part of Hunan Province has developed rapidly. In 2010, only the direct seeding rice area in Dingcheng District of Changde City reached 60,000 hectares, accounting for one half of the rice acreage in the area. The large number of self-grown rice in direct-seeded rice fields has had a great impact on the yield and quality of direct-seeded rice and has become a serious obstacle to the high and stable yield of rice. In addition, due to the morphology and fertility characteristics of self-grown rice are similar to cultivated rice, farmers often mistaken for quality of seed in their production, often causing disputes. Therefore, a correct understanding of the law of self-growing rice, a comprehensive and comprehensive prevention and control measures, and strict control of self-growing rice are of great significance to the stable development of rice production.