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。
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 CO2,Mn2+,Fe2+and H2S 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 CO2,40 mg/kg Fe2+,70 mg/kg Mn2+and 001 mg/kg H2S respectively,above which the waterlogging damage will occur and will be seriously injurious to the normal growth and development of wheat crop.
出处
《江苏农业学报》
CSCD
北大核心
1997年第4期202-205,共4页
Jiangsu Journal of Agricultural Sciences
基金
国家自然科学基金
关键词
小麦
根际还原物质
生长
产量
湿害
waterlogging wheat
reducing matter in rhizosphere
wheat growth
yield