大豆结荚期密植田光温效应的初步研究

以揭示巴彦大豆密植增产的机理为目的 ,依据结荚期大豆田光温湿等小气候要素的田间实测观测资料 ,对比分析了密植田与对照田大豆冠层下光强、活动面温度与湿度的分布特征与变化特点 ,并从农业气象角度对其变化特点与规律产生的原因予以解释。结果表明 :结荚期出植大豆田冠层下光强普遍低于对照田 ;活动面温度昼间高于对照田 ,夜间低于对照田 ;株间相对湿度低于对照田。

The primary study on the effect of illuminate-temperature of soybean close planting field in bearing pod stage

For the purpose of groping the high field mechanism of close planting soybean colony,based on the soybean field real observed data of microclimatic factors including illuminate,temperature and moisture,the distribution features and changing characteristics of light intensity under covering layer,active layer temperature and moisture in the close planting field are analysed by comparision.In addition the reason for the features and regular pattern are explained from the points of view on the agricultural meteorology The results show that in soybean bearing pod stage light intensity under covering layer in close planting field is higher than in normal planting field,active layer temperature of close planting is higher at daytime and lower at night,and active layer moisture is also lower.$$$$