安徽农业科学2012，Vol.40Issue(21)：10940-10941,11134,3.
南方梯田地区的乡村人居环境满意度评价及优化研究——以湖南紫鹊界梯田为例
Evaluation and Optimization of the Satisfaction with Rural Human Settlements Environment in the Terrace Area of South China
摘要
Abstract
[ Objective] To understand on allelopathic effects of Jatropka curcas. [Method ]The allelopathic effecte of J. curcas leaf leachates on photosynthetic pigments, concentration of nitrate (NO+4 ), ammonium ( NH4+), soluble proteins and enzymes [ nitrate reductase (NR), glutamine Bynthase (GS) and glutamate dehydrogenase (GDH) ] activities in leaves of T. erecta. seedlings were studied. [ Result ] The application of J. curcas leaf leachates in the soil significantly inhibited total chlorophyll content compared to the contrast. Meanwhile, the leaf leachates significantly decreased the total nilrogen, soluble protein and nitrate content in the leaves of T. erecta. seedlings, and yet increased the ammonium. The effects increased with increasing concentrations of leaf Uachates. la addition, NR, GS and GDH were not affected by the leachates at lower concentrations, but at higher concentration, both NR and GS activities were reduced while GDH activities were increased, [Conclusion] J. curcas released the phytotoxic compounds into soil, which were inhibitory to certain test species by interfering with nitrogen metabolism.关键词
紫鹊界/乡村人居环境/模糊综合评价Key words
Jatropha curcas/ Leaf leachates/ Allelopathy/ Tagetes erecta L / Nitrogen metabolism分类
农业科技引用本文复制引用
罗意坚,王鹏,邓育武,田成,罗文丽,黄政珉,唐高溶..南方梯田地区的乡村人居环境满意度评价及优化研究——以湖南紫鹊界梯田为例[J].安徽农业科学,2012,40(21):10940-10941,11134,3.基金项目
湖南省大学生研究性学习和创新性实验计划项目资助(NYD2011002) （NYD2011002）
国家自然科学资金项目(41171076) （41171076）
湖南省教育厅基金项目(09C177). （09C177）
