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复播是提高单位面积产量(其中包括粮食)的有力措施.但我区进行复播其意义还不祗此,复播能大最种植绿肥,增加土壤有机物,改良土壤结构,从而提高土壤肥力;我区盐渍土甚多,夏收后在高温曝晒下,土壤水分急剧蒸发,盐分迅速上升,往往使土壤次生盐渍化,而复播后则有作物覆盖,可减少地表蒸发,避免盐分上升.因此,可以说,复播有百利而无一害.
Re-broadcasting is a powerful measure to increase the yield per unit area, including foodstuffs, but it is not so meaningful for me to re-broadcast the land. It is of great significance for meteorological stations to plant green manure, increase soil organic matter and improve soil structure so as to enhance soil fertility. There are many saline soils in our district. Under high temperature exposure after summer harvest, soil moisture evaporates rapidly and salt rapidly rises, often resulting in secondary salinization of the soil and crop cover after compounding, which can reduce surface evaporation and prevent salt rise Therefore, it can be said that there is no harm in the complex broadcasting.