摘要
本文利用我国亚热带东部丘陵山区十几个观测点三年的油桐物候观测资料,以及笔者对鄂西、湘西北山区油桐栽培现状考察结果,首次详尽地分析了油桐的物候期及其随纬度、高度的特征;初步分析了油桐产量与气候条件、海拔高度、物候期之间的关系;最后对我国油桐适宜经济种植高度进行了讨论。
Tung oil tree's phenological properties and their relation with cha- nge of latitude and height are analysed.The low temperature both in tung oil tree's blossom period and winter is the limiting factor for tung oil tree's development in higher mountains or more northern areas in subtropical zone. The relationship between tung oil tree's yield,and meteorological factors and height can be transferred to the relationship between the yield and the phenological periods. The suitable cultivating height in various mountains of the subtro- pical zone of eastern China is calculated.Tung oil trees should be cul- tivated at the following districts:river valleys and basins below 500m in north subtropical zone;slopes and hills below 800m in mid-subtropical zone;mid-high mountainous areas over 800m in south-subtropical zone; while the wood oil trees at such districts as river valleys and basins below 500m in mid-and south-subtropical zone.
出处
《地理科学》
CSSCI
CSCD
北大核心
1991年第3期287-294,共8页
Scientia Geographica Sinica
关键词
三年桐
物候
纬度
递变率
Tung oil tree
Phenology
Latitude
Height
Gradient
