浙江省绍兴县地处经济发达地区的宁绍平原,随着水稻耕作制度和栽培品种不断变化,单季稻直播面积增加,密穗型杂交水稻占了较大比例,全县密穗型杂交水稻年种植面积在3万亩左右,特别是甬优12等品种,平均亩产超过650 kg,接连创出亩产787.6 kg、845.6 kg的高产纪录,为实现粮食稳产高产作出了贡献。然引种之初,稻曲病严重发生,一度影响到该类型品种在本县的推广应用。这两年针对该类品种特性,通过改进栽培管理方式、推广关键防控技术等措施,将穗发病率控制在1.5%左右,病粒 Shaoxing County, Zhejiang Province is located in the economically developed regions of Ninzhao Plain, with the continuous changes in rice farming system and cultivars, single-seeding increased direct seeding area, dense hybrid rice accounts for a large proportion of spike hybrid rice in the county planted The area is about 30,000 mu, especially Yongyou 12, with an average yield of more than 650 kg per mu, and a series of high yield records of 787.6 kg and 845.6 kg per mu have been made in succession, contributing to a steady and high yield of grain. However, at the beginning of introduction, false smut seriously occurred, which once affected the popularization and application of this type of variety in this county. In the past two years, according to the characteristics of these varieties, the ear morbidity was controlled at about 1.5% by improving cultivation management and promoting key prevention and control technologies.