冬小麦保护性耕作法与传统耕作法的田间对比试验

对６种保护性耕作法和传统耕作法进行了连续６ａ的田间对比试验研究，结果表明，采用保护性耕作法的冬小麦地夏休闲期蓄水量明显高于传统耕作，平均多蓄水９％，水分利用效率比传统耕作平均高１３．２％；产量比传统耕作平均增加约１４％，其中旱年增产幅度较大，平、丰水年增产幅度较小。

Field Experiments for Comparison of Winter Wheat Conservation Tillage and Conventional Tillage

Field experiments for the comparison of 6 conservation tillage treatments and a conventional treatment were conducted. The experimental results continued for 6 years showed that the average water storage in fallow and the average water use efficiency of the conservation tillage treatments for winter wheat were about 9 % and 13 % , respectively, higher than that of the conventional tillage treatment. Therefore, the average yield of the former was increased by 13 % as comparing to that of the latter. It is also concluded that the conservation tillage could result in a rather bigger increase of winter wheat yield in a drier year than in a less drought or wet year as comparing to conventional tillage.