地面覆草对生姜光合特性的影响

姜田地面覆草 ,可使生姜叶片较传统插草变厚 ,叶绿素含量降低 ,增强生姜叶片适应强光的能力。裸地生姜叶片也发生适应性变化 ,但由于受到较为严重的逆境胁迫 ,其光合速率均低于覆草及插草姜田。而覆草与插草处理生姜叶片的光合速率大小及变化规律十分相似。

Effects of Mulching with Straw on the Photosynthetic Characteristics of Ginger

Mulching with straw in ginger field could make ginger leaves thicker,content of chlorophyll lower than those of shaded ginger,and increased the ability of adapting strong light. Though the leaves of ginger in naked field also changed,the photosynthetic rate was lower than that in mulching and shading field,because ginger in naked field was subjected to serious stress. The photosynthetic rate and its diurnal changes were almost the same under both mulching and shading conditions.