Effects of climate conditions on hot pepper yield in northern Guizhou and prediction model of meteorological yield
[Objective]The key meteorological factors,critical periods,and the influence degree of meteorological conditions on hot peppers yield in the northern Guizhou region were explored,which provided a theoretical basis for hot pepper production decisions,climate impact assessment,and yield forecasting in northern Guizhou.[Method]The yield separation method and mathematical statistics were used to study the key meteorological factors,critical periods,and their relationships affecting hot pepper yield in northern Guizhou region.Taking Bozhou District as the research area,the prediction model of meteorological yield of hot pepper was studied.[Result]Higher average and maximum temperatures in June were unfavorable for the formation of hot pepper yield;The minimum temperature from late August to mid-September was the limiting factor for yield,with higher minimum temperatures correlating with higher yields.When the diurnal temperature range ex-ceeds 8.5 ℃,the pepper yield tended to increase slowly as the diurnal temperature range increases.The amount of precipitation in late June was the moisture limiting factor for hot pepper growth,with more precipitation leading to higher yields.The hours of sunlight from mid-April to early May and from mid-June to late June had negative relationships with meteorological yield.The meteorological prediction model for hot pepper yield in Bozhou district was Yw=-40.836Tmid-June to late June+40.644 Tearly August-106.159.[Conclusion]Meteorological conditions in the northern Guizhou region affect hot pepper yields by approximately±50％.The meteorological conditions of different areas have differ-ent influence on hot pepper yield through different critical periods.The key period of climate conditions in Bozhou region is in the middle and late period.The temperature during the middle period of pepper growth is significantly negatively correlated with hot pepper yield.Except the precipitation in late June in Bozhou District limiting hot pepper growth,precipitation in many counties and districts meets the water needs for hot pepper growth.The impact of sunshine hours on hot pepper yield is positive at early stage and negative at later stage.
Northern GuizhouHot pepper yieldMeteorological yieldPrediction model
万方数据
维普
