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该研究在高产田条件下，选择了产量潜力高但植株性状及产量构成显著不同的少穗大穗型核生2号、多穗小穗型烟农15及中间类型的泰876161品系，进行了品种-空背宽度-边际效应相关规律的研究，结果表明：（l）在间套行较窄的情况下，选择多穗小穗型品种有利于发挥边行增产作用，在间套行较宽的情况下，选择中穗或大穗型品种则更有利于发挥边行小麦的增产效果；（2）边行小麦增产，大穗型核生2号以增加穗数为主要特征，小穗型烟农15以增加穗数和穗粒数为主要特征，中间型的泰876161则是相对的穗数、粒数与粒重协调增加；（3）随空背宽度加宽，边行增产幅度提高，大穗型核生2号是增穗为主，穗粒数比重不变，粒重比重下降；小穗型烟农15是穗粒数比重提高，穗数比重持平，粒重比重下降，中间型泰87616正则是穗数、粒数比重协调增加，粒重比重下降；（4）边2行小麦的增产作用与品种和边1行的增产幅度相关，40cm空背下，少穗大穗型核生2号边2行增产幅度最高，其次是中间型泰876161，多穗小重型烟在15几乎无增产效果，空背加宽，边1行增产幅度提高，使边2行的增产幅度下降，甚至减产，100cm空背下，大穗型核生2号边2行较内行稍有增产，而小穗型烟农15和中间型泰876161则边2行出现减产，以边1行增产幅度最大的泰8761
Under the conditions of high-yielding field, the study was conducted under the conditions of high-yielding field and low yielding panicle type Panaxnian 2, multi-panicle spikelet type Yannong 15 and intermediate type Tai 876161 with high yield potential but significantly different plant characters and yield. The results showed that: (1) In the case of narrower intercropping, the selection of multi-spike spike varieties is conducive to play a sideline production increase, in the intercropping broad In the case of mid-spike or big-spike, it is more conducive to increase the yield of side-row wheat. (2) Frontier wheat increased yield, 15 with the increase of spikes and grains per spike as the main feature, the middle of the Thai 876161 is the relative number of spikes, grain number and grain weight increased in coordination; (3) with the width of the back width widened, the side line yield increase, large Spike type of nuclear health No. 2 is increased by the ear, the proportion of the same number of grains per spike, the proportion of grain weight decreased; spikelet farmers 15 is the proportion of grains per spike, spike number of the same weight, weight decreased, the intermediate type 87616 Regular is the number of spikes, the proportion of grain increased coordination, grain weight ratio (4) The yield increase of two rows of wheat was related to the yield increase of varieties and the first row. Under the 40 cm empty back, the yield of the second row of No.2 panicles was the highest, followed by the middle type of Thai 876161, Small Spike Small Tobacco at 15 with almost no stimulation effect, empty back widening, side 1 row yield increase rate, so that the edge of 2 rows yield reduction, or even cut, 100cm empty back, large panicle on the 2nd Slightly more yield was produced in line 2 and line 2 compared with that in line 2 while the yield of small-spike tobacco cultivar 15 and intermediate type 876161 was decreased in 2 rows while the yield in Taihang 1 was the highest