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作者	单位
赛力汗·赛，薛丽华，张永强，雷钧杰，陈兴武，王志敏	（1.中国农业大学农学院，北京100193；2.新疆农业科学院粮食作物研究所，新疆乌鲁木齐 830091）

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中文摘要:

为探究滴灌量对冬小麦干物质积累及籽粒灌浆影响的行间差异，在大田滴灌条件下，设置了3 750 m·hm^-2（高水量）、3 150 m·hm^-2（中水量）和2 475 m·hm^-2（低水量）3个灌水量处理，测定分析了不同灌水条件下距滴管不同位置行（滴管单侧第1行定为近管行，第3行定为远管行）的小麦干物质积累量、籽粒灌浆及籽粒产量形成特征。结果表明，冬小麦单茎及各器官干物质积累量均随滴灌量的增加而增加，且近管行高于远管行。随滴灌量的降低，籽粒灌浆持续时间缩短，灌浆速率峰值提前出现，但平均灌浆速率无显著变化；在高水和中水量下远管行与近管行的灌浆参数相似，但在低水量下远管行的最大和平均灌浆速率明显低于近管行。在相同灌水量下远管行的籽粒产量均低于近管行，但在中水量和高水量下行间籽粒产量差异不显著。处理间籽粒产量表现为高水量>中水量>低水量，但中水量与高水量间差异较小，且中水量的灌溉水分利用效率最高。

英文摘要:

To study the effects of different drip irrigation amount on characteristics of dry matter accumulation, grain filling and yield difference between inter-row of winter wheat, three irrigation quantities, 3 750 m·hm^-2(high irrigation level treatment, HLT), 3 150 m·hm^-2(middle irrigation level treatment, MLT) and 2 475 m·hm^-2(low irrigation level treatment, LLT) were conducted in a randomized block experimental design, and the dry matter accumulation per stem, variation of grain filling and yield formation of winter wheat were analyzed, under the conditions of different irrigation amount and different distance from pipes［we defined that the first row of unilateral pipe named nearby pipe(NP), and the third row of unilateral pipe named long distance from pipe(FP)］. The results showed that, the variation of dry matter accumulation per stem and of each organ all presented a trend of “HLT>MLT>LLT” and “NP>FP”. The duration of grain filling was shortened with the decrease of irrigation amount and the maximum value of grain filling rate appeared in advance, while there was no significant difference in average grain filling rate. The filling parameters of NP and FP under both HLT and MLT were similar , but the maximum grain-filling rate and mean grain-filling rate of FP under LLT was significantly lower than that of NP. The yield of FP under different treatments was lower than that of NP, but there was no significant difference between that of MLT and the LLT. The variation rule of yield also showed a trend of HLT>MLT>LLT, but there was little difference between HLT and MLT, and MLT achieved the highest water use efficiency.

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