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本试验着重研究生姜的需光特性及合理的群体密度，结果表明：生姜为耐阴性植物，光补偿点为５００──８００米烛光，光饱和点为２５０００──３００００米烛光．３５０００米烛光以上。随着光强的增加，光合强度有逐渐下降趋势。在中等肥水条件下，每亩种植８０００株，叶面积指数为５．３５，在自然光强度为５００００－６００００米烛光时。中、上部最大叶层正处在光饱和点的光强度下，基部亦处在光补偿点两倍以上，能满足生姜正常生长的需要，产量较高，商品质量亦较好，可供生产参考。
The experiment focused on the study of ginger need light characteristics and reasonable population density, the results showed that: ginger is negative-tolerant plants, light compensation point 500 ─ ─ 800 meters candle light saturation point 25000 ─ ─ 30000 meters candle light. 35000 meters above the candlelight. With the increase of light intensity, the photosynthetic intensity gradually decreased. Under moderate fertilizer and water conditions, 8,000 plants were planted per acre with a leaf area index of 5.35 at a natural light intensity of 50,000 to 60,000 meters of candlelight. The uppermost leaf layer in the upper part is at the light intensity of the light saturation point, the base is also at the light compensation point more than twice, to meet the needs of the normal growth of ginger, high yield, good quality of the goods for production reference .