湘东烤烟地膜覆盖栽培气象效应分析

Meteorological Effect of Plastic Sheet Mulching Tobacco in East Hunan

通过对湘东烟区地膜覆盖栽培的气象因素的观测分析 ,发现地膜覆盖栽培土壤的温度有明显增加 ,但不同时期、不同气候、不同土层增温效果不一样。土壤湿度比较稳定 ,受外界自然降水影响较小 ,变化比较平缓 ,在干旱少雨时 ,有明显的增湿效果。烟株进入团棵期以后 ,地膜覆盖栽培能增加下部叶片的采光率。地膜覆盖栽培可改善温、水、光等气象条件 ,从而改善烤烟生长的生态环境 ,最终表现为烤烟生长状况良好和产量产值的提高。

Through the analysis of meteorological factors of tobacco plant culture with plastic film, but the increase of temperature is different and different soil layers, the humidity of the soil becomes relatiuely stable, the influence of natural precipitation becomes relatiuely weak, the change becomes relatiuely gentle. When it is dry, humidity can be increased obviously. During the period of , lightning becomes easy for leaves; The improved temperature. water and light improues the ecological environment of tobacco plant's growth, thus raises its output and output value.