气象条件对苎麻产量品质及经济性状的影响

The Influences of Weather Conditions on the Yield, Quality and Development of Agronomic Characteristics of Ramie

较高相对湿度使苎麻茎粗、皮厚，单位面积有效株数、鲜皮出麻率、原麻产量和单纤维支数提高，原麻含胶率下降；生长中后期总日照时数较多则利于苎麻茎粗、皮厚、鲜皮出麻率和原麻产量提高并降低原麻含胶率；雨日和雨量较多能增加有效株数，提高纤维支数。高温、强光和高蒸发量增加株高却减少有效株数，不利于高产优质；总辐照量大抑制除株高之外的其它经济性状发育，造成低产劣质。

The result from multiple sites experiments showed that higher relative humidity of air was propitious to the increase of stem diameter, bast thickness, effective stalks, bast stripping percentage, raw fiber yield, to the melioration of fiber quality and to the reduction of gum content in raw fiber. More total sunshine hours in the mid late growth stage was helpful to enhance stem diameter, bast thickness, bast stripping percentage and raw fiber yield, and to lessen the gum content of raw fiber. More precipitation amount and rain days helped to increase effective stalks and fiber fineness. During the whole growth period, high temperature and evaporation, strong sun light decreased effective stalks, raw fiber yield and fiber quality despite of some stimulation to plant height of ramie. High total solar radiation was only good to plant height but unfavorable to other economic characters, resulting in low raw fiber yield and fiber quality.