In order to explore the effects of different planting patterns on plant height,thick stems,leaf area index,dry matter accumulation and yield of summer soybean (Heihe 45) under drip irrigation in Yining County,Xinjiang in the same density,five plant patterns were established as the row spacing× plant spacing:treatment A(30 cm×6.0 cm),treatment B(40 cm×4.5 cm),treatment C(60 cm×3.0 cm),treatment D〔(15+30)cm×8.0 cm〕and treatment E〔(15+15+60)cm×6.0 cm〕.The results showed that the plant height,thick stems,leaf area index,dry matter accumulation and population photosynthetic potential of wide-narrow row spacing treatment were all better than those of equal row spacing treatment.The total amount of dry matter accumulation per plant under wide-narrow row treatment was higher than that in equal row spacing treatment,especially in wide-narrow row treatment D,the maximum accumulation rate was the largest and the emergence time was the earliest,0.30-3.65 d in advance.The number of pod per plant,grain number ratio by wide-narrow row spacing treatment were increased by a mean value of 19.83% and 12.83% more than those by the equal row spacing treatment.The yields of wide-narrow row treatment D and treatment E were 3 469.54 kg/hm2 and 3387.27 kg/hm2,respectively,and the average yield was 24.51% higher than that of equal row spacing treatment.Under this condition,wide-narrow row planting pattern is one of the effective measures to increase summer soybean yield.%以黑河45号大豆为材料,在新疆伊宁县研究滴灌条件下,同一密度不同株行距对复播大豆株高、茎粗、叶面积指数、干物质积累及产量的影响.设定5种行距×株距种植方式:A处理(30 cm×6.0 cm)、B处理(40 cm×4.5 cm)、C处理(60 cm×3.0 cm)、D处理〔(15+30)cm×8.0 cm〕、E处理〔(15+15+60)cm×6.0 cm〕,结果表明,宽窄行处理的株高、茎粗、叶面积指数、群体光合势均优于等行距处理.宽窄行处理的单株干物质积累总量高于等行距处理,尤以宽窄行处理D的干物质积累总量最大,宽窄行处理D的最大积累速率最大,出现时间也最早,提前0.30~3.65 d.宽窄行处理的单株荚数、粒数比等行距处理平均值增加了19.83%和12.83%.宽窄行处理D和处理E的产量分别是3 469.54、3 387.27 kg/hm2,平均产量比等行距处理的平均值增加24.51%.本试验条件下,宽窄行种植是提高夏大豆产量的有效种植方式之一.
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