摘要
本试验采用“771—56”(早中熟)和“疫不加”(中晚熟)两个品种,分春、秋作,共6个播种期研究马铃薯块茎形成膨大对温度的反应。结果表明:马铃薯各生育期的长短都需要一定的度·日温度积累。播期不同显著影响匐匍茎形成和块茎形成的早迟,但不影响度·日数的变化,品种和季节不同,度·日数也不同。块茎形成不仅要求一定的度·日温度,而且要在一定的温度(16℃左右)条件下,块茎膨大的适宜温度为14～22℃,而最适温度为17～19℃。
Using two potato cultivars, early cultivar(771-56), and medium-late cultivar(Epoka), and six dates of planting at Spring and Autume seasons to study the responses of tuber initiation and bulking to temperature. Results indicated that the tuber initiation needs certain heat units which was expressed in growth degree-day (GDD). The GDD in different planting date were constant, but they were differed with cultivars and seasons. The favourable temperature of tuber formation was about 16℃. The optimum soil temperature for tuber bulking was 17～19℃.
出处
《云南农业大学学报》
CAS
CSCD
1992年第4期244-249,共6页
Journal of Yunnan Agricultural University
关键词
马铃薯
块茎
膨大
温度
Planting date of potato Tuber initiation and bulking Temperature
