亚麻品种在云南省不同生态条件下的生长发育特征分析

本文分析了2003—2004年度10个亚麻品种在云南省9个试验点的生育状况，同时以弥渡县、巍山县和武定县为代表地区分析不同亚麻品种在云南省不同生态条件下的生长特征。云南冬播亚麻生育期比北方延长l倍左右，不同生育阶段均比北方亚麻延长。不同试点的亚麻生育期差异较大，生长日数最短的140天，最长的187天。不同试点的亚麻茎生长速度有较大差别，但都出现两个生长高峰，一个在立春前，一个在立春后，这一点也与北方亚麻明显不同。

Characteristics of Growth and Development of 10 Flax Varieties under Different Ecological Conditions in Yunnan Province, China

The status of growth and development of 10 flax varieties in year 2003 2004 in 9 counties of Yunnan Province were analysed. The growth characteristics of different flax varieties in typical counties such as Midu, Weishan and Wuding were also assessed. The growth duration of flax sown in the winter in Yunnan Province was about twice as long as that of flax in Northeastern China. All the growth stages were longer than that of flax in Northeastern China. The growth duration of flax in different districts varied remarkably, showing from 140 days to 187 days. Evident differences in stem growth speed of flax in different districts were observed. There were two peaks of stem growth speed for the tested varieties in all experimental sites. One appeared before and the other after the Spring Begin. This is also greatly different from the pattern of flax stem growth speed in the northeast of China.