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黄腐酸拌种对春小麦产量和水分利用效率的影响
引用本文:李捷,李凤民,刘洪升.黄腐酸拌种对春小麦产量和水分利用效率的影响[J].应用生态学报,2000,11(5):727-730.
作者姓名:李捷  李凤民  刘洪升
作者单位:兰州大学干旱农业生态国家重点实验室,兰州,730000
基金项目:国家“九五”科技攻关项目!(96 0 2 0 0 1 0 2 0 2 )
摘    要:在大田研究了黄腐酸拌种对春小麦产量形成和水分利用效率的影响。实验设4个处理:对照(CK),播种前种子不处理;FA处理:播种前用FA拌种;WM处理:浇30mm底墒水,覆膜;处理WMFA:浇30mm底墒水,覆膜,播种前用FA拌种。2个覆膜处理均在播种后62d揭膜。同CK相比,FA拌种后,根系生长良好,吸收利用了更多的土壤水分,增加了穗重、单穗籽粒重和收获指数,产量和水分利用效率均显著提高。WM和WMF

关 键 词:黄腐酸  春小麦  产量  水分利用效率  拌种

Effect of mixing seed with fulvic acid on spring wheat yield and its water use efficiency
LI Jie,LI Fengmin,LIU Hongsheng.Effect of mixing seed with fulvic acid on spring wheat yield and its water use efficiency[J].Chinese Journal of Applied Ecology,2000,11(5):727-730.
Authors:LI Jie  LI Fengmin  LIU Hongsheng
Institution:State Key Laboratory of Arid Agroecology, Lanzhou University, Lanzhou 730000.
Abstract:Four treatments were installed to study the effect of seed mixed with fulvic acid on sring wheat yield and water use efficiency: CK(without any treatment of fulvic acid); FA(seeds were mixed with fulvic acid before sowing), WM(pre-sowing irrigation of 30 mm plus clear plastic film mulch), and WMFA(pre-sowing irrigation of 30 mm plus plastic film mulch, and seeds were mixed with fulvic acid before sowing). The plastic film mulches in WM and WMFA treatments were removed after sowing for 62 days. Compared to treatment CK, the spring wheat in FA treatment grew more roots and absorbed more water from soil, and increased the spike weight and grain weight per spike and harvest index, which resulted in a higher yield and higher water use efficiency. There was no differenece in water consumption between treatments WM and WMFA, but in treatment WMFA, more dry matter was distributed in shoots, and hence yield and water use efficiency were improved significantly. The yields for the four treatments CK, FA, WM, WMFA were 917.7, 1275.1, 1269.4, 1737.1 kg.hm-2, respectively; and the water use efficiencies were 6.58, 7.85, 6.20, 9.05 kg.hm-2.mm-1, respectively.
Keywords:Fulvic acid    Spring wheat    Yield    Water use efficiency  
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