不同氮肥底追比对小豆产量及氮效率的影响
首发时间:2019-04-04
摘要:本试验于2018年6月24日-10月1日在河北农业大学教学三分场进行,以保红876为试验材料。研究了不同氮肥底追比对小豆产量及氮素利用的影响。结果表明:(1)T2处理小豆产量为最低,T3处理为最高,其中,T3处理比其他处理平均产量高26.3%,比对照高31.2%。T3处理的单株荚数比其他处理平均值高10.2%,比对照高7.0%;T3处理的单荚粒数比其他处理平均值和对照高9.6%、23.6%;T3处理的百粒重比其他处理平均值和对照高9.1%、3.2%。(2)T1处理的氮素利用效率最高为40.63kg/kg,比其他各个处理平均氮素利用效率高27.71%,比对照高40.17%,T3处理的氮肥偏生产力最高为16.32kg/kg,比其他各个处理均值高26.27%,比对照高40.17%;CK对照的氮素收获指数最高为93.94%,但与其他处理相比差异不显著。这些研究结果表明,T3处理(氮肥底追比例5∶5,即底施:75kg/hm2,初花期追施75kg/hm2)是适合河北平原小豆种植的最佳底肥和追肥比例模式。
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Effects of different nitrogen fertilizer base and topdressingratio on Yield and Nitrogen Efficiency in Adzuki Bean
Abstract:The experiment was carried out in the third teaching field of hebei agricultural university from June 24 to October 1, 2018. The experimental material. was baohong 876. The effects of different Ratios of Base and topdressing of nitrogen fertilizer on yield and nitrogen utilization in adzuki bean were studied. The results showed that : (1) The yield of adzuki bean was the lowest under T2 treatment, and the yield of adzuki bean was the highest under T3 treatment. The pod number per plant treated of T3 treatment was 10.2% higher than the average of other treatments, and 7.0% higher than the control. The number of single pod of T3 treatment was 9.6% and 23.6% higher than the average and control of other treatments. The 100-grain weight of T3 treatment was 9.1% and 3.2% higher than the average and control of other treatments. (2) The highest nitrogen use efficiency of T1 treatment was 40.63 kg/kg, 27.71% higher than the average nitrogen use efficiency of other treatments, and 40.17% higher than the control. The highest nitrogen partial productivity of T3 treatment was 16.32kg/kg, 26.27% higher than the average of other treatments, and 40.17% higher than the control. The CK control had the highest nitrogen harvest index of 93.94%, but the difference was not significant compared with other treatments. These results showed that T3 treatment (nitrogen fertilizer ratios of base and topdressing was 5:5, that is, bottom application: 75kg/hm2, and topdressing application of 75kg/hm2 in the early flowering stage) was the best base fertilizer and topdressing application ratio model suitable for Adzuki Bean in hebei plain.
Keywords: Adzuki Bean Nitrogen Ratios of Base and topdressing Nitrogen efficiency Yield
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