【摘要】 通过不同施肥条件对膜侧小麦水分利用、农艺性状、增产效应、经济效益等方面分析,研究干旱地区膜侧小麦的施肥问题。结果表明:施肥可以提高水分利用率1.1~3.1 kg/(mm.hm2),促进小麦生长发育;不同施肥水平对小麦的增产效应不同:低肥、中肥、高肥3种施肥水平分别比不施肥的对照增产731.5 kg/hm2,1461.0kg/hm2和1 648.5 kg/hm2,增产率分别为25.5%、50.9%和57.4%;经济效益以中肥水平(折合施纯N118.1kg/hm2,P2O594.5 kg/hm2和K2O 60.0 kg/hm2)最高,产值可达2 045.4元/hm2,产投比为2.7∶1。因此,在低、中、高3个施肥水平中,中等施肥最为有效、合理,有利于增产增收。更多还原

【Abstract】 The experiment was conducted to study the effects of fertilization on water utilization,agronomic characters and economic benefit of dryland wheat planted on sides of film in furrow lines.The results showed that the application of fertilizers could significantly increase WUE by 1.1～3.1 kg/（mm·hm²）,and advance the development of wheat.Under the treatments of low fertilizer,mid fertilizer and high fertilizer,the yield of wheat was increased by 731.5 kg/hm²,1 461.0 kg/hm² and 1 648.5 kg/hm²,respectively,compared with the unfertilized treatment;and the yield increase rate was 25.5%,50.9% and 57.4%,respectively.The economic benefit was found to be the highest under the mid fertilizer treatment with N 118.1 kg/hm²,P₂O₅ 94.5（kg/hm²） and K₂O 60.0 kg/hm².更多还原