旱作物涝渍排水研究动态分析

在总结分析国内外有关研究的基础上 ,指出涝渍地旱作排水研究有 5大趋势 :1由重视农田排涝发展到重视农田排渍 ;2由静态排水指标研究发展到动态排水指标研究 ;3由涝、渍分别研究发展到涝渍综合研究 ;4从排水指标仅考虑作物产量发展到既考虑产量又重视品质 ;5由单一涝渍过程对作物的影响研究发展到多个涝渍过程对作物的复合影响研究。

Research Trends about Surface and Subsurface Waterlogging Drainage on Dry Farmlands

Based upon analyzing relevant references in domestic and abroad, research trends about drainage in waterlogged dry farmlands are mainly laid on following five aspects: ① research emphasis shifts from surface water drainage to subsurface water drainage: ② researches shifts from for steady indexes to for dynamic indexes: ③ research contents shifts from studying surface water drainage and subsurface water separately to studying them simultaneously; ④ studying about drainage indexes shifts from considering only crop yield to considering both crop yield ant production quality at the same time: ⑤ studying on the influence of waterlogging on crop production shifts from considering single process to considering multiple processes simultaneously. Finally, it is considered as a general trend that surface and subsurface waterlogging will be regarded as a unitary process and to be studied comprehensively on dry farmlands.