为探讨小麦叶面追肥的增产效果，选择增产幅度较大的液肥种类，为农业生产服务，特安排如下试验。一、材料与方法本试验设在所内生长较整齐一致的小麦品种繁殖田内，品种为烟144，小区面积12米’（3X4），4个处理，3次重复，按顺序排列。试验地基肥为尿素20公斤／亩，美国H铰10 In order to explore the yield-increasing effect of top-dressing wheat leaves, we chose the types of liquid fertilizers with larger yields and served for agricultural production. The special arrangements were as follows. I. Materials and Methods The experiment was conducted in the field of wheat varieties that grew neatly and uniformly. The varieties were smoked 144, and the plot area was 12 meters’ (3X4). Four treatments were performed and three replicates were arranged in order. The test foundation fertilizer is urea 20 kg / mu, the United States H hinge 10