中国稻米Issue(6)：10-13,4.
南通市粳稻安全齐穗和安全成熟期的时间演变研究
Temporal Change Characteristics of Safe Dates for Full Heading and Maturity in Japonica Rice
摘要
Abstract
In this study, the average daily temperatures from September to November in Nantong City were analyzed. According to the critical temperature indices for japonica rice, obtained rice safe dates of full heading and maturity and the guarantee rate for the safe dates was 50%, 80%, and 90%, respectively. It was observed that the safe dates of full heading during the third 20 years were eight to nine days later than those during the first and second 20 years, and the safe dates of maturity were five to ten days later, respectively. It was observed that as the globe warmed, the critical temperature indices of full heading (20℃) would not develop the function of guiding production, and proposed the reference index, the summation of effective temperature from full heading to maturity, to predict the dates through the security maturity forward daily cumulative effective temperature (≥10℃). The corrected safe dates for full heading of 80%were September 6, 25 days earlier than initial predicted dates.关键词
南通市/水稻/安全齐穗期/安全成熟期/日平均气温/有效积温Key words
Nantong City/japonica rice/safe dates of full heading/safe dates of maturity/average daily temperature/effective temperature分类
农业科技引用本文复制引用
李世峰,徐云,刘蓉蓉..南通市粳稻安全齐穗和安全成熟期的时间演变研究[J].中国稻米,2014,(6):10-13,4.基金项目
江苏省“六大人才高峰”资助项目 （）
