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1997年 9月至 1 999年 6月在中国气象局固城农业气象试验基地人工控制农田水分试验场进行了冬小麦不同底墒处理的试验 ,结果表明 :底墒显著影响冬小麦的生长发育和产量 ,对冬小麦总生物量、地上和地下生物量的影响在小麦生长后期比前期明显 ;底墒与植株高度、叶面积系数有良好的二次曲线关系 ;底墒显著影响产量构成因素 ,其与籽粒重有相当好的二次曲线关系 ,并据此确定了冬小麦播种时不同深度土层的最佳底墒 :0～ 1 m为 88% ,0～ 2 m为82 % .
From September 1997 to June 1999, experiments on different soil moisture treatments of winter wheat were carried out in artificial weather control farmland experiment station of China Meteorological Bureau Gucheng Agrometeorological Experiment Base. The results showed that soil moisture at the end of planting had a significant effect on the growth and yield of winter wheat, The effects of total biomass, above-ground and below-ground biomass were obvious at the later stage of wheat growth. There was a good quadratic relationship between soil moisture and plant height and leaf area coefficient. Soil moisture had a significant effect on yield components, The results showed that the best soil moisture at different depths of sowing in winter wheat was 88% for 0-1 m and 82% for 0-2 m.