贵州省错季番茄气候生产潜力差异分析

摘要

为了解贵州不同季节番茄气候生产潜力的变化趋势、空间差异以及番茄气候资源利用规律,研究基于贵州省81个气象站1961～2015年的气象资料,采用逐步订正、GIS空间插值和线性趋势分析等方法,分析番茄的光合、光温和气候生产潜力的时空变化特征.结果表明:冬春番茄的光合和气候生产潜力均呈递减的变化趋势,递减率分别为174.11、226.52 kh/(hm2·10 a),而光温生产潜力为递增的变化趋势;夏秋番茄的光合、光温和气候生产潜力均为递减趋势,递减速率分别为355.24、317.99、427.67 kg/(hm2·10 a);空间分布特征表明,冬春番茄的气候生产潜力空间上自东南向西部递减的趋势,夏秋番茄的气候生产潜力呈西南向东北递减的趋势;分别对番茄光合生产力分别进行温度、水分订正,冬春、夏秋番茄的平均气候减产率分别为35％、15％,其中降雨量是番茄气候生产潜力的主要限制因子.%In order to understand the variance analysis of climatic potential productivity of tomato in different seasons,the research based on the 1961-2015 meteorological data of 81 weather stations,by the methods of step by step revisal,spatial interpolation and linear trend analysis,the temporal and spatial variation characteristics of YQ,YT,YW were analyzed.The results showed that during the study period,YQ,YT,YW showed a decreasing trend,while YT increased in winter-spring at a rate 174.11,226.52 kg/(hm2·10 a);The YQ,YT,YW of tomato in estivo-autumnal were in a decreasing trend,reduced by 355.24,317.99,427.67 kg/(hm2·10 a);The spacial distribution of YQ,YT,YW revealed that the YW of tomato in winter-spring decreased gradually from southeast to west,while the YW of tomato in estivo-autumnal decreased from southwest to northeast;The temperature and moisture content of YW tomato were revised,and the average yield of winter-spring,estivo-autumnal tomato decreased 35％ and 15％ respectively,and the rainfall was the main limiting factor for the YW of tomato.