水肥是小麦增产的主要条件,近年来由于农田水利条件的不断改善,施肥问题就显得突出,为此,1974年以来,我们通过院内和农村基点的田间试验和室内分析,对小麦的需肥规律,土壤和植株养分动态变化和施肥技术进行了初步研究。一、小麦的需肥规律1、小麦产量与需肥量几年试验结果指出,一般情况下,小麦产量是随养分吸收数量的增加而增加的。小麦单产436—1277.5斤,实际吸收氮6.94—37.4 Water and fertilizer are the main conditions for wheat yield increase. In recent years, due to continuous improvement of farmland water conservancy conditions, fertilization problems become prominent. Therefore, since 1974, we have conducted field experiments and laboratory analysis on wheat basic fertilizer requirements , Soil and plant nutrient dynamics and fertilization techniques were studied. First, the rule of wheat need fertilizer 1, wheat yield and fertilizer required Years of trial results indicate that, under normal circumstances, the wheat yield increases with the increase in nutrient uptake. Wheat yields 436-1277.5 kg, the actual absorption of nitrogen 6.94-37.4