选择株行距为 3.5m× 15m的枣豆间作田 ,研究其光照和土壤水分空间变化及其对大豆生长发育的影响。结果表明 :间作系统中树冠下和树冠外的光强分别为对照的 5 2 .2 %和 87.9% ,树冠下和树冠外的土壤含水量分别为行中的 80 .2 %～ 82 %和 90 .4%～ 94%。由于光照不足和水分胁迫降低了大豆的株高和叶面积 ,树冠下和树冠外较行中分别减产 36 .3%～ 17.7% ;较对照田减产 2 1.3%和 2 .7% ,而行中大豆产量较对照增产 15 %。 The row spacing of 3.5m × 15m was chosen to study the spatial variation of light and soil moisture and its effect on the growth and development of soybean. The results showed that the light intensity under the canopy and the canopy outside the canopy was 52.2% and 87.9% of the control, respectively. The soil moisture content outside the canopy and outside the canopy were 80.2% -82% and 90% respectively .4% ~ 94%. Due to insufficient light and water stress, the plant height and leaf area of ​​soybean decreased by 36.3% -17.7% under canopy and outside canopy, respectively. Compared with control field, the yield was reduced by 21.3% and 2.7% Soybean yield 15% more than the control.