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2. 发明授权

US5120344A Method for producing a barrier layer in soil 失效
标题翻译：在土壤中生产阻隔层的方法
公开(公告)号：US5120344A
公开(公告)日：1992-06-09
申请号：US747467
申请日：1991-08-13
申请人： Oszkar Libor , Gabor Nagy , Tamas Szekely , Rudolf Mester , Kalman Kazareczki , Tibor Muller , Jeno Kiss , Zoltan Saghi , Adam Hosszu
发明人： Oszkar Libor , Gabor Nagy , Tamas Szekely , Rudolf Mester , Kalman Kazareczki , Tibor Muller , Jeno Kiss , Zoltan Saghi , Adam Hosszu
IPC分类号： A01G25/00 , C05G3/00 , C09K17/42
CPC分类号： C05G3/0047 , C09K17/42 , A01G2025/003 , Y10S106/90 , Y10S71/903 , Y10S71/904
摘要： The present invention relates to a method for producing a closing layer which improves the water and nutrient retention of soils, particularly of sandy soils, characterized in that a layer of clay mineral/polymer gel capable of binding and releasing water in a reversible manner is introduced into the soil, preferably 20-60 cm below the soil surface, in such a way that a clay mineral is reacted either before or after or during activation in the presence of water, with 0.5-30% by weight, calculated for the weight of the clay mineral, of one or more water-soluble polymer capable of reacting with the clay mineral, the water content of the resulting gel is adjusted either before or after or during the reaction to a value at which the resistance of medium of the gel is at least three times higher than that of a polymer-free suspension containing the same amount of the clay mineral, if a non-activated clay mineral has been applied as starting substance, the clay mineral is activated with an alkaline activating agent after reacting it with the polymer, and, if desired, further amounts of a water-soluble polymer, one or more water-insoluble swelling xerogel capable of at least 100% water uptake and forming swollen particles less than 1 mm in diameter and/or one or more chemical for agricultural use, preferably a plant nutrient, a fungicidal substance acting against soil-borne fungi and/or a plant growth increasing substance, is added to the gel either before or after or during the reaction with the polymer, and/or, if desired, the gel and the non-reacted polymer molecules are cross-linked with an aldehyde, and finally the thus-formed gel layer is covered with a soil layer.
摘要翻译：本发明涉及一种用于生产封闭层的方法，该方法改善了土壤，特别是沙质土壤的水分和营养物质的保留性，其特征在于引入能够以可逆方式结合和释放水的粘土矿物/聚合物凝胶层进入土壤，优选在土壤表面下方20-60厘米，使得粘土矿物在水的存在下在活化之前或之后或在水的存在下反应，其重量计为0.5-30重量％一种或多种能够与粘土矿物反应的水溶性聚合物的粘土矿物，所得凝胶的水含量在反应之前或之后被调节至凝胶介质的电阻为比含有相同量的粘土矿物的无聚合物悬浮液高至少三倍，如果未活化的粘土矿物被用作起始物质，则粘土矿物被激活碱性活化剂在与聚合物反应后，如果需要，还可添加一定量的水溶性聚合物，一种或多种能够至少100％吸水并形成直径小于1mm的溶胀颗粒的水不溶性溶胀干凝胶和/或一种或多种用于农业的化学品，优选植物营养物质，对土壤真菌和/或植物生长增加物质起作用的杀真菌剂，在与聚合物反应之前或期间或之后加入到凝胶中，和/或如果需要，凝胶和未反应的聚合物分子与醛交联，最后将如此形成的凝胶层用土壤层覆盖。

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