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枯水情势对长江中下游取水工程运行影响及对策研究
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作者 柯帅 丁兵 渠庚 《中国防汛抗旱》 2023年第9期25-30,共6页
长江是长江经济带发展的重要依托,也是沿江城市群最重要的水源地。2022年长江中下游干流极端枯水位的出现极大影响了沿江城市供水安全,暴露出长江中下游沿岸取水工程在枯水情况下面临重大威胁。基于已有研究成果,在上游干支流控制性水... 长江是长江经济带发展的重要依托,也是沿江城市群最重要的水源地。2022年长江中下游干流极端枯水位的出现极大影响了沿江城市供水安全,暴露出长江中下游沿岸取水工程在枯水情况下面临重大威胁。基于已有研究成果,在上游干支流控制性水库陆续建成及极端干旱灾害频发的背景下,从水库蓄洪补枯调度、枯水河槽下切及干旱天气影响角度,阐述了长江中下游干流未来枯水情势变化趋势,分析了枯期水位下降对取水水位、水质保证及河口取水工程抵御盐水入侵的影响,并提出了相应对策建议。 展开更多
关键词 长江中下游 枯水条件 取水工程 供水安全 治理对策
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Effect of Soil Amendments on Soil Borne Pathogens of French Bean (Phaseolus vulgaris L,) in Organic Farming System in Manipur
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作者 G. K. N. Chhetry H. C. Mangang 《Journal of Agricultural Science and Technology(A)》 2011年第1X期68-72,共5页
The rationale behind the use of soil amendments by traditional marginal farmers against soil borne pathogen is an area of interest. The present work ascertain the effect of certain soil amendments against pre emergent... The rationale behind the use of soil amendments by traditional marginal farmers against soil borne pathogen is an area of interest. The present work ascertain the effect of certain soil amendments against pre emergent and post emergent rot of French bean in the agro climatic condition of Manipur, Four soil amendments: cow dung (COD), sawdust (SD) + paddy husk (PH), decomposed floating phytomat (DFP) was tried in field conditions in four different combinations. These have been often used by the traditional farmers. A locally available commonly cultivated pole type of French bean has been used for the study. Disease incidences in plots treated with these amendments were then compared with that of control plots where no amendments were made. The plots with a combined treatment of the soil amendments showed maximum seed germination and least post emergent rot against sclerotinia rot. But DFP showed effectiveness against rhizoctonia rot with maximum seed germination while saw dust showed maximum decrease in post emergent rot against rhizoctonia rot. The plots treated with organic soil amendments showed statistically significant positive effect against the pathogens as compared with untreated control plots. 展开更多
关键词 Soil amendment bean rot soil borne pathogens
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