渭北旱原东部地区旱作冬小麦水分产量潜势定位试验研究

The Fixed Position Study of Winter Wheat Water Yield Potential in the East Part of Weibei Rainred Highland

通过１９９１～１９９４年３个年度田间定位试验结果，提出了渭北旱原东部地区旱作冬小麦水分产量潜势、潜势系数及其生长、需水规律等，为研究该地区制定粮食生产发展指标及其实现途径提供了定位试验的科学依据。同时对已有计算冬小麦产量数学模型的修订及参数的取值也具有重要意义。

This paper suggests the rainfed winter wheat water yield potential,po-tentional coefficients and the laws of wheat growth and water requirement based on the field fixed position experiments in the years of 1991～1994,thus providing some scienti-fic bases for working out food production targets and ways to achieve them and fixed po-sition experiment.At the same time,this study is of great importance to the modifica-tions and parameter values of mathematical models for the calculation of winter wheatyields.