Follow up evaluation on safety of new middle hybrid rice varieties
杂交中稻新品种安全跟踪评价

摘要

衡南县农业农村局2022年对本地种植面积较大的20个中稻品种进行大田安全跟踪评价，在同一地块种植进行比较，实行统一播插、统一肥水管理与病虫防控。2022年8月上旬-9月下旬，我县连续高温干旱,特别是抽穗穗扬花期、灌浆结实期气温高，品种的耐热性能得到充分表达。根据专家田间鉴定评议意见及测产数据结果表明：玮两优8612、万丰优818、冠两优华占、两优517、臻两优5438、隆两优1988、隆两优1686、晶两优1237、荃广优879、Y两优957等10个品种生育期适中，抗逆性好，耐肥抗倒，耐热性较强，结实率和产量都较高，综合性状较好，适宜在我县作中稻大面积种植。

Abstract

In 2022, Hengnan County Agriculture and Rural Bureau will track and evaluate the field safety of 20 medium rice varieties with large local planting area, compare the planting on the same plot, and implement unified planting, unified fertilizer and water management, and pest control. From the first ten days of August to the last ten days of September 2022, our county will have continuous high temperature and drought, especially the high temperature in the heading, heading, flowering and filling stages, and the heat tolerance of the varieties will be fully expressed. According to the experts' field appraisal comments and yield measurement data, 10 varieties, including Wei Liangyou 8612, Wan Fengyou 818, Guan Liangyou Huazhan, Liang You 517, Zhen Liangyou 5438, Long Liangyou 1988, Long Liangyou 1686, Jing Liangyou 1237, Tsuen Guang You 879, Y Liangyou 957, have moderate growth period, good resistance to stress, fertilizer and lodging, strong heat resistance, high seed setting rate and yield, and good comprehensive properties, which are suitable for large-scale planting of medium rice in our county.