编辑同志:多年来,广大农民在给小麦、油菜、玉米等农作物追施化肥时,都是使用耧冲沟、锄刨坑,丢入化肥再覆土这一繁重的传统方法。有些农民图省时省力,干脆把碳铵、尿素、复合肥等高效化肥趁土地潮湿或阴雨天撒到田里,岂不知这样做化肥会在一定的温度下“溜”走,失去了化肥的效力,造成施肥不但不能增产反而减产。同时,因近几年来小麦推广了机播,麦苗行距太窄,这 Editorial Comrades: Over the years, the vast majority of peasants have used the traditional methods of using ditches, hoeing pits and throwing chemical fertilizers and then covering soil when they are topdressing fertilizers for crops such as wheat, rape and corn. Some farmers figure time and effort, simply to ammonium bicarbonate, urea, compound fertilizer and other fertilizer to take advantage of damp or rainy days sprinkle the field, do you not know how to do this fertilizer will be at a certain temperature “slip ” go, lost The effectiveness of fertilizers, resulting in fertilization not only failed to increase production but cut. In the meantime, due to the promotion of mechanical broadcasting in recent years, the spacing of wheat seedlings is too narrow