摘要
本研究运用时段概率法分析了赣州地区１７个县（市）１９５９～１９９３年连续３５年的气温资料，分别找出了各县（市）日平均气温稳定通过（１００％，９０％，８０％保证率）＞２３．５℃的连续１５ｄ以上有利时段；提出了赣南不同生态点，可分别采用不同季节制种，以及稳定通过育性转换敏感期的最佳时段；根据最佳育性转换期确定安全抽穗和播种期。从结果表明赣南各地均能满足籼型两用核不育系制种的温度值及时段。目前选育出的Ｆ１３１Ｓ等新的籼型两用核不育系，在赣南都有实用价值。
Air temperature data of thirty-five uccessive years(1959～1993)in 17 counties(cities)in Ganzhou prefecture are analysed with ″ period probability method″ The advantageous periods of 15 days with successively stable air temperature above23. 5℃(the stability reaching 100%,90%,80%),are found in every county (city).The sea-sons for seed production and the optimum periods for fertility alteration in different ecologicallocations are put forward. The safe heading and sowing perieds are determined.by the opti-mum fertility alteration period. Based on the above results,the air temperature valves and pe-riods of seed production of indica DGML can be satisfied in different locations in Ganzhou pre-fecture. The new DGML F131S has practical valve in Ganzhou prefecture.
出处
《江西农业大学学报》
CAS
CSCD
1995年第3期244-249,共6页
Acta Agriculturae Universitatis Jiangxiensis
关键词
籼稻
三系配套
制种
生态气候
indica dual-purpose genic male-sterile line (rice)
probability
period of stableair temperature
optimum period for fertility alteration
