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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。
Through the analysis of water use efficiency, agronomic traits, yield-increasing effect and economic benefit of wheat on the film side through different fertilization conditions, the fertilization problem of wheat in the dry land was studied. The results showed that fertilization could increase the water use efficiency by 1.1-3.1 kg / (mm.hm2) and promote the growth and development of wheat. The effects of different fertilization levels on wheat yield were different: the three fertilization levels of low, middle and high fertilizers were respectively The fertilization control increased yield by 731.5 kg / hm2, 1461.0 kg / hm2 and 1 648.5 kg / hm2 respectively, with the yield increasing rates of 25.5%, 50.9% and 57.4%, respectively. The economic benefits were as follows: fertilizer level N118.1kg / hm2, P2O594 .5 kg / hm2 and K2O 60.0 kg / hm2) with the highest output value of 2045.4 yuan / hm2 and a ratio of 2.7: 1. Therefore, in the low, medium and high fertilization levels of 3, the middle fertilization is the most effective and reasonable, is conducive to increase production and income.