| The pilot study on rought-resistant foliage spraying is made with the treatments of using three different concentrations of a drought-resistant FA(Dryland Long) spraying on winter wheat foliage at the critical growth period of winter wheat in three times and two times of six kinds,in Wanrong County,Shanxi Province. The results showed that: spraying a certain concentration of the drought-resistant FA on winter wheat foliage in jointing,booting and filling stage,the drought-resistant effect has significantly increased;In dry years,spraying high concentration of drought-resistant FA obtained higher yield than low concentration,spraying three times better than two times,the percentage of yield increase of six kinds of treatment is 8.2%～38%.The main effects of spraying drought-resistant FA increased the resistance of winter wheat,improved the efficiency of the use of soil moisture and increased the rate of effective ear,kernels/ear and 1000-kernal weight. |