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在高产田条件下，选用了中穗型冬小麦品种泰８７６１６１，设计小麦大小行播种，小行距 ２０ｃｍ，大行距分别为３０、４０、７０及１００ｃｍ，形成了５０（２０＋３０）、６０（２０＋４０）、９０（２０＋７０）及１２０ （２０＋１００）ｃｍ ４种带型模式，以常规 ２０ｃｍ等行距（２０＋２０）模式栽培作对照。试验又设置了 ５个 播种密度，即１ｍ单行基本苗数分别为１５、３０、４５、６０及７５。研究了小麦带型－群体－产量的相关规 律。主要结果是：（１）行产量（ｙ）随宽行距（ｘ）加宽而提高，增长规律拟合为ｙ＝ａ／ｘ＋ｂ的函数 形式。（２）随播种密度加大，（２０＋２０）、（２０＋３０）及（２０＋４０）模式行产量明显下降，而（２０十７０）及 （２０＋１００）模式则下降不甚明显。各带型均在精量播种下（１５苗／ｍ）获得高产。（３）随宽行距（ｘ） 加宽，产量（ｙ）拟合为ｙ＝ａｘｅ~ｂｘ的函数变化形式，１５、３０、４５、６０及７５苗／ｍ拟合的最高产量的宽 行距分别为３９．５５、４１．１１、４４．１０、４３．９３及４４．９３ｃｍ。５个密度平均拟合方程为ｙ＝ ３６．６０６８４ｘｅ~－２．３５３１１９×10~－２ｘ，ｒ＝－０．９９４６１８９~＊＊，最高产量的宽行?
Under high-yielding field conditions, the middle-spike winter wheat cultivar Tai 876161 was selected to design wheat rows and rows with small row spacing of 20 cm and large row spacing of 30, 40, 70 and 100 cm, respectively, forming 50 (20 + 30) and 60 90 (20 + 70) and 120 (20 + 100) cm 4 bands were used as controls in the conventional 20 cm spacing (20 + 20) mode. The experiment also set five seeding density, that is, the basic number of single seedlings of 1m 15,30,45,60 and 75 respectively. The correlations of the wheat type - population - yield were studied. The main results are as follows: (1) The yield (y) increases as the width (x) broadens, and the growth law is fitted as a function of y = a / x + b. (2) The yields of (20 + 20), (20 + 30) and (20 + 40) decreased significantly with the increase of seeding densities, while those of (20 + 70) and (20 + 100) decreased less obviously. Each strip was sown in precision (15 seed / m) to obtain high yield. (3) As the widening row spacing (x) widened, the yield (y) fitted as a function of y = ax ~ bx, and the wide row spacing for the highest yields of 15, 30, 45, 60 and 75 seedlings / 39.55, 41.11, 4.10, 43.93 and 44.93 cm. The average fitting equation of 5 density is y = 36.60684xe ~ -2.353119 × 10 ~ -2x, r = -0.9946189 ~ **, the highest yield of wide row?