摘要
棉花为河北省重要的经济作物,与其它作物相比对气候比较敏感。选取河北省25个棉花县,对棉花各个发育期气候适宜度及其时空分布进行分析计算。结果表明:棉花从播种到吐絮降水适宜度比温度、日照适宜度明显偏小,尤以播种期和吐絮期最小,且变异系数最大。日照适宜度从播种到吐絮变化不大,较温度和降水适宜度高。多年适宜度的变化趋势为:温度适宜度缓慢上升,降水适宜度缓慢下降,日照适宜度在明显下降,气候综合适宜度同降水一致,在缓慢下降。降水适宜度高值区分布在北部棉区,低值区分布在黑龙港流域的部分地区;温度适宜度低值区在唐山大部,高值区在黑龙港流域;日照适宜度低值区在西部太行山丘陵棉区,高值区在东部棉区。
As an important industrial crop for Hebei Province, cotton is more sensitive to climate compared with other crops. According to homogenizing principle,25 stations in Hebei Province were chosen. With meteorological data, the cotton climatic suitability degrees and its spatial-temporal distribution in each development period were calculated and analyzed. The result indicated： the precipitation suitability degree was obviously lower than temperature suitability during the period from sowing to boll-opening of cotton, and it got to the smallest in sowing time and boll-opening time and the coefficient of variation was the largest. Sunshine suitability degree from sowing to boll-opening had no big change, but higher than that of temperature and precipitation. The change tendency of ature suitability degree showing slow rise, precipitation suitability degree dropping obviously, and the climate synthesis suitability degree climatic suitability for many years was： tempershowing slow drop, sunshine suitability degree being consistent with precipitation, in slow decline. The areas with high-value of precipitation suitability degree were distributed in the northern cotton planting regions, while the low-value areas in some part of Heilonggang basin; the areas with low-value temperature suitability degree were distributed in most part of Tangshan, while the high-value areas in Heilonggang basin ; the areas with low-value sunshine suitabil- ity degree were distributed in westem Mt. Taihang hill cotton region, while the high-value areas in the eastern regions.
出处
《干旱地区农业研究》
CSCD
北大核心
2009年第5期24-29,共6页
Agricultural Research in the Arid Areas
基金
河北省气象局科技开发项目(06KY09)
关键词
棉花
气候适宜度
河北省
climatic suitability degrees
spatial-temporal distribution
Hebei Province
