【摘要】 设立不同生育期、不同时间相似生育期渍水，及渍水持续期和地下水埋深试验，研究小麦根际还原物质的积累和小麦发生湿害的关系。结果表明：渍水麦田根际ＣＯ２、Ｍｎ２＋、Ｆｅ２＋、Ｈ２Ｓ的积累量与小麦受渍害的程度趋势一致，渍害对小麦产量的影响受到自身生长特性的调节。文章还讨论了根际还原物质的诊断。试验初步结果，在小麦生长季节，根际ＣＯ２、Ｆｅ２＋、Ｍｎ２＋和Ｈ２Ｓ含量分别达到１００μｌ／Ｌ、４０ｍｇ／ｋｇ、７０ｍｇ／ｋｇ和０．０１ｍｇ／ｋｇ时，小麦就会发生湿害，严重影响小麦正常生长和发育更多还原

【Abstract】 Relationship　between　accumulation　of　reducing　matter　in　root　zone　and　occurrence　of　wheat　waterlogging　injury　were　studied.Treatment　of　waterlogging:①At　different　growth　stages:tillering,jointing,booting　and　filling;②Under　different　season:waterlogging　in　January,March　for　tillering　wheat;in　March,April　for　jointing　wheat;in　April,May　for　booting　wheat;③Duration:10,15,20　and　30　days　at　booting　stage;④Ground　water　table:0,80,120　cm　at　booting　stage;⑤Without　waterlogging(CK).The　results　showed　that　the　accumulation　of　CO2,Mn2+,Fe2+and　H2S　in　rhizosphere　in　waterlogging　wheat　field　was　in　accordance　with　the　wheat　growth　injury,and　the　impact　to　the　wheat　yield　was　regulated　by　its　growth　character.The　preliminary　results　suggested　the　following　diagnostic　indices　for　reducing　matter　in　rhizosphere　during　the　wheat　growing　season　were　100　μl/L　CO2,40　mg/kg　Fe2+,70　mg/kg　Mn2+and　001 mg/kg　H2S　respectively,above　which　the　waterlogging　damage　will　occur　and　will　be　seriously　injurious　to　the　normal　growth　and　development　of　wheat　crop.更多还原