土壤保水剂对秋植蔗形态生理效应的研究  

Effect of Water-Retaining Agent on Morphophysiology of Autumn-planted Sugarcane

作　　者：刘子凡[1] 梁计南[2] 罗明珠[2] 赵轩裕[1] 

机构地区：[1]华南热带农业大学农学院,海南儋州571737 [2]华南农业大学农学院,广州市510642

出　　处：《热带农业科学》2004年第2期18-22,共5页Chinese Journal of Tropical Agriculture

摘　　要：探讨了水分胁迫处理后保水剂对秋植蔗的形态生理的影响。试验结果表明:保水剂能够提高土壤含水量;增加+1叶叶面积、株高、茎叶及根系干重;降低气孔导度(Gs)和蒸腾速率(Tr);另外还可使蔗叶叶绿素含量增加,净光合速率(Pn)增强。A field trial on morphophysiological effect of water-retaining agent on potted sugarcane planted in autumn under water stress was conducted at the experimental base of South China University of Tropical Agriculture in 2001. The results demonstrated that the water-retaining agent improved the soil water content and increased plant height, leaf surface area and the dry matter weight of the root, stem and leaf, but decreased stomatal conductance and transpiration rate. The results also showed that the water-retaining agent enhanced chlorophyll content in leaf and net photosynthetic rate, and had better effect on the poor drought-resistant varieties.

关 键 词：土壤保水剂 秋植蔗 形态生理效应 土壤含水量 

分 类 号：S566.1[农业科学—作物学]