Annual legumes can adapt to reduced light, a condition common in intercropping, by increasing the efficiency with which they convert energy into dry matter (DM). The performance of five forage legumes under reduced light–simulated by growing them under a shade net was evaluated in terms of agronomic adaptation, light interception, and the quality of forage. A third of the plot length was covered with Aluminet shade cloth 20–25 days after planting to reduce sunlight reaching the crop canopy to 30% of that without shade. Leaf area index (LAI) and light interception (LI) were significantly different depending on the species and shading up to 50–60 days after planting but not thereafter. Shading reduced DM significantly (p = 0.05), by 31–39% in 2009 and by 26–35% in 2010. Lima bean was affected the most (DM reduced by 43%), followed by pigeonpea (39%), whereas lablab (17%) and cowpea (29%) were affected the least. It affected dry matter in leaves and pods more than that in the stem. Shading had only a marginal influence on the concentration of crude protein,but increased the content of acid detergent fiber and neutral detergent fiber. Overall, lablab and cowpea were best adapted to reduced sunlight and therefore will be suitable for intercropping

一年生豆科植物可以通过提高它们将能量转化为干物质 (DM) 的效率来适应减少的光照，这是间作中常见的一种情况。五种牧草豆科植物在弱光下的表现——通过在遮阳网下种植它们进行模拟，从农艺适应性、光线拦截和牧草质量方面进行评估。种植后 20-25 天用铝质遮阳布覆盖三分之一的地块长度，以将到达作物冠层的阳光减少到没有遮荫时的 30%。叶面积指数 (LAI) 和截光率 (LI) 因物种而异，在种植后 50-60 天遮荫，但此后则不然。遮荫显着降低了干物质（p = 0.05），2009 年降低了 31-39%，2010 年降低了 26-35%。利马豆受影响最大（干物质减少 43%），其次是木豆（39%），而 lablab (17%) 和豇豆 (29%) 受影响最小。它对叶子和豆荚干物质的影响大于对茎干物质的影响。遮光对粗蛋白浓度影响不大，但增加了酸性洗涤纤维和中性洗涤纤维的含量。总体而言，lablab 和豇豆最适合减少阳光，因此适合间作