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库边地栽桑及其若干性状的调查
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作者 沈国新 杨开治 +1 位作者 郭蓉兰 程飞能 《蚕桑通报》 1991年第1期24-26,共3页
一向认为是旱生植物的桑树,对水的抗逆性较弱。据日本南泽吉三郎调查,桑树淹水一周,枝叶开始受损害,桑根呼吸困难,继而腐烂乃至整株桑树枯死。国内也有类似的报道。对于能否在库边水淹地上种桑,浙江省临安县蚕种场从1980年起,在青山水... 一向认为是旱生植物的桑树,对水的抗逆性较弱。据日本南泽吉三郎调查,桑树淹水一周,枝叶开始受损害,桑根呼吸困难,继而腐烂乃至整株桑树枯死。国内也有类似的报道。对于能否在库边水淹地上种桑,浙江省临安县蚕种场从1980年起,在青山水库边水淹地上进行栽桑试验。 展开更多
关键词 桑树 栽培 库边地 性状
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Stability analysis of wharf slope under large water level difference in inland fiver
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作者 XU Jinling 《International English Education Research》 2016年第4期82-83,共2页
Abstract: Because of the complex topography in southwest region of China, the water level of the inland river has a large amplitude of variation which causes a frequent diversification of water content in the river s... Abstract: Because of the complex topography in southwest region of China, the water level of the inland river has a large amplitude of variation which causes a frequent diversification of water content in the river slope. The flow caused by the infiltration of the terminal slope stability will induce a great impact on the slope stability of wharf.. This paper uses an ideal elastic-plastic model and the Moore Coulomb yield criterion for numerical simulation. Through the b an k slop e stability of the overhead-type terminal s under the changes of water, we obtained the impact of all factors on the bank slope in the course of water lowering. It was found out that the impact from the cohesion of the geo-materials of the bank slope on the slope stability is greater than that from the internal friction angle. 展开更多
关键词 SLOPE Three-Gorges reservoir area strength reduction SEEPAGE
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