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试验于1995～1996年度进行,供试品种为冀麦38在田间条件下,通过不同节水灌溉、不同施磷处理探讨了土壤水分亏缺对冬小麦光合和物质生产的影响及磷肥的补偿效应结果表明:不同时期的水分胁迫均使净同化率、叶面积系数、光合强度、群体生长率降低,但影响程度不同;磷肥对水分胁迫不利影响的补偿作用主要在于对叶面积的扩大和穗数的增加;拔节至开花期、开花至灌浆初期的土壤干旱均会引起产量显著下降
The experiment was carried out in 1995-1996. Under the field conditions, the test variety Ji-ming 38 discussed the effects of soil water deficit on the photosynthesis and material production of winter wheat and the compensation effect of phosphorus fertilizer by different water-saving irrigation and different phosphorus application The results showed that: the water assimilation in different periods all reduced the net assimilation rate, the leaf area coefficient, the photosynthetic intensity and the population growth rate, but had different degrees of influence; the compensation effect of the phosphate fertilizer on the adverse effects of water stress was mainly on the expansion of the leaf area and the number of spikes Increase; jointing to flowering, flowering to early filling of the soil drought will cause a significant decline in production