小麦株型与田间透光率关系研究

通过试验研究了田间光照强度与株型性状的关系。分析表明亩穗数、收敛指数、叶态、穗重4个性状与小麦田间平均透光率显著相关。茎态是株型的重要指标,茎态紧凑型品种的田间透光性大,茎态松散的品种透光性小。通过收敛指数与产量多项式拟合说明不同成穗类型的品种对茎态的要求不同。即大穗品种要求扩张型茎态,中穗品种要求松散茎态,多穗型品种要求紧凑或极紧凑茎态。

Studies on the Relations between the Plant Stem of Wheat and the Field Transmittance

This article study the relations between the field strength of illumination and plant stem character through experiment.The analysis indicates that the four features-the number of ear per Chinese acre,the convergence exponent,leaf condition and the heavy of ear have remarkable correlation with the wheat field average transmittance.The stem condition is a important target.The field lightadmitting quality of the compact variety stem condition is big,but the light-admitting quality of the loose variety stem condition is small.The article explains the different sort of ear style requires different stem condition through the convergence exponent and the output multinomial fitting.Namely the big ear of variety requests expanded stem condition,and medium-sized ear of variety requests loose stem condition,and multiear of variety requests compact or extremely compact stem condition.