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采用海冰水(含盐量3‰)灌溉,结合4种施肥措施(无机肥、有机肥与无机肥配施、土壤调理剂与无机肥配施和不施肥处理),研究海冰水灌溉配合农艺措施对土壤水分和盐分动态的影响。2007年-2008年结果表明:苗期和花期灌水后海冰水处理的土壤含水率均显著高于井水处理,尤其灌溉后播种前期0～40cm土层含水量差异显著;井水灌溉施加液膜处理的土壤含水率较未处理的显著提高。海冰水灌溉土壤1m土体脱盐率达40%。连续两年试验,两种灌溉水处理并配合不同农艺措施条件下均可有效淋洗土壤中盐分。2007年海冰水灌溉下,土壤调理剂与无机肥配施处理和有机肥与无机肥配施处理的小区0～40cm土壤脱盐率显著高于无机肥单施的处理(约53%～55%)。本试验研究得出,使用3‰的海冰水加液膜处理后灌溉棉田,并配合土壤调理剂与无机肥配施或有机肥与无机肥配施,能够加快灌溉后水分入渗和土壤盐分的淋洗。
The sea ice water (salinity 3 ‰) irrigation, combined with four kinds of fertilization measures (inorganic fertilizers, organic and inorganic fertilizer application, soil conditioner and inorganic fertilizer with and without fertilization treatment), the study of sea ice water irrigation with Effect of agronomic practices on soil moisture and salt dynamics. The results from 2007 to 2008 showed that the soil water content of sea ice water treatment after seedling and flowering was significantly higher than that of well water treatment, especially after 0-40 cm soil layer irrigation before sowing; The treated soil had a significantly higher moisture content than the untreated soil. Sea ice water irrigation soil 1m soil desalination rate of 40%. Two consecutive years of experiment, two kinds of irrigation water treatment and with different agronomic conditions can effectively wash the soil salt. Under the condition of sea ice water irrigation in 2007, the desalination rate of soil 0 ~ 40cm in the treatment of soil conditioner and inorganic fertilizer and the treatment of organic manure and inorganic fertilizer was significantly higher than that of inorganic fertilizer (about 53% ~ 55% ). The study concluded that the use of 3 ‰ sea ice water film after treatment of irrigated cotton fields, and with the soil conditioner and inorganic fertilizer or organic fertilizer and inorganic fertilizer application, can accelerate the infiltration after irrigation water and soil salinity Rinse.