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盐渍土区水稻栽培一般均需较多的水量,一是满足水稻各生育时期的生理生态需水,二是要有足够的水量淋洗土壤中过量的有害盐分。但对大面积盐渍土区种稻开发和利用,往往与有限的水资源造成矛盾,如何综合利用各种措施,进行节水高产栽培,是非常重要的课题。我省主要以节水改土高产为目标,集中在水资源的开发利用、田间工程的布局和结构、栽培方式和生产结构、灌溉制度和灌溉技术四个方面来研究。一、合理利用水资源1.浅层地下淡水利用滨海盐渍土区虽然由于土壤质地粘重,原生、次生含盐量较高,大部分地下潜水矿化度高,不适于灌溉。可是营口东部沿千山余脉的西侧地区,地下水埋藏较浅,只有5～6米到十几米,水质较好,水量也较丰富。不但春季
In saline soils, rice cultivation generally needs more water, one is to meet the ecological and ecological needs of rice at each growth stage, and the other is to have enough water to leach excessive amounts of harmful salt in the soil. However, the development and utilization of paddy rice in large areas of saline soils often result in contradictions with limited water resources. It is a very important issue how to comprehensively utilize various measures to carry out water-saving and high-yield cultivation. The province mainly aims at saving water and improving soil and improving yields. It focuses on four aspects: development and utilization of water resources, layout and structure of field works, cultivation methods and production structure, irrigation system and irrigation technology. First, the rational use of water resources 1. shallow underground freshwater use of coastal saline soil Although soil texture sticky, primary, secondary salinity higher, most of the underground diving mineralization is high, not suitable for irrigation. However, the eastern part of Yingkou along the western mountains of the Qianshan Mountains, buried shallow groundwater, only 5 to 6 meters to 10 meters, better water quality, water is also more abundant. Not only in spring