肥料对小麦生长发育及产量的影响

选用陕253小麦品种，研究了不同肥料对其群体、干物质积累、叶片光合性能及产量的影响，结果表明：在不同肥料配比情况下，增施肥料能显著提高群体数量和成穗数，单株干物质积累显著增加。但单株光合性能在灌浆期与施肥量关系不明显，处理间叶片净光合速率、蒸腾速率和气孔导度变化不大。N、P肥与生物肥配合施用能显著提高小麦单产，较常规投肥水平增产493.95 kg/hm2。

The Effect of Fertilizer on Development and Yield of wheat

This experiment studied the effect of fertilizer on the population quantity, accumulation of dry material, photosynthesis characteristics and yield of Shaan 253,a good quality, high and stable yield winter wheat variety. The result shows that raising fertilizer can increase the population quantity and ears; and the accumulation number of dry material of organs increase with raising fertilizer in different fertilizer level. The relationship between photosynthesis characteristic per plant and fertilizer applying is not distinct. There are not obvious difference among Photo, Trmmol and Cond of treatment. Applying fertilizer of N, P and organism fertilizer can increase the yield of wheat greatly 493.95 kg/hm2.