| 混料设计在辣椒不同类型氮肥配比试验研究中的应用 |
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| 引用本文： | 庞占琴,王鑫,肖朝霞,刘玲霞.混料设计在辣椒不同类型氮肥配比试验研究中的应用[J].干旱地区农业研究,2008,26(5):47-50. |
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| 作者姓名： | 庞占琴 王鑫 肖朝霞 刘玲霞 |
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| 作者单位： | 1. 甘肃省华池县农技推广中心,甘肃,华池,745600
2. 陇东学院生命科学系,甘肃,庆阳,745000 |
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| 基金项目： | 甘肃省庆阳市科技攻关计划项目，陇东学院科学研究项目 |
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| 摘 要： | 采用田间试验,研究了混料设计中的单形重心设计在辣椒控释尿素、普通尿素配肥上的应用,测定了辣椒的产量及其构成,配置了各因子的产量回归方程,解析寻优,对肥料效应及经济效益进行了分析.结果表明,三种氮肥比例为普通尿素U=0.20～0.30,控释尿素D60(控释期60天)=0.40～0.60,控释尿素D30(控释期30天)=0.20～0.40(换算为纯氮实际用量U=150.0～225.0 kg/hm2,D60=300.0～450.0 kg/hm2,D30=150.0～300.0 kg/hm2)的方案,预测最高产量可达85.0 t/hm2.控释尿素D30-D60两者配合施用、普通尿素与控释尿素D30-D60三者配合施用均能显著提高辣椒产量,比普通尿素分别增产24.40、28.26 t/hm2,增产率分别为42.0%和49.0%,产量差异均达极显著水平.施肥效应以D30-D60混合最高,为20.88 t/hm2,达极显著水平.经济效益分析表明,U-D30-D60处理施肥利润为2.440万元/hm2,氮素利用率最高,为60.1%.普通尿素与两种控释尿素按一定比例混合施用有利于提高辣椒产量和增加农民的经济收入.
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| 关 键 词： | 辣椒 包膜控释尿素 混料设计 氮肥配比 经济效益 |
Application of mixture design in the experiment of combination of different kinds of N-fertilizer on hot pepper |
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| PANG Zhanqin,WANG Xin,XIAO Zhaoxi,LIU Lingxia.Application of mixture design in the experiment of combination of different kinds of N-fertilizer on hot pepper[J].Agricultural Research in the Arid Areas,2008,26(5):47-50. |
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| Authors: | PANG Zhanqin WANG Xin XIAO Zhaoxi LIU Lingxia |
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| Institution: | Huachi County Agri-technical extentation Center, Huachi, Gansu 745600, China;Department of Life Sciences, Longdong University, Qingyang, Gansu 745000, China |
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| Abstract: | Field experiment was conducted to study the application of simplex centroid design in mixture experiment of combination of controlled-release urea and normal urea on hot pepper, and the pepper yield and its components are determined. Based on configuration of various factors to establish yield regression equation, effect and benefit of fertilizer application were analyzed. The results show that both the combined application of two kinds of controlled-release urea D30-D60 and the combined application of normal urea and controlled-release urea D30-D60 can increase the pepper yield by 24.40 t/hm-2 and 28.26 t/hm-2, with a increasing rate of 42.0% and 49.0% respectively compared to the application of single normal urea. The highest yield-increasing effect of the mixture of D30-D60 can get to a significant level of 20.88 t/hm-2. And the results of economic benefit analysis show that, with the nitrogen use efficiency as high as 60.1%, the profit per unit area of U-D30-D60 treatment is 24 400 yuan·hm-2. Therefore, mixed application of the normal urea and two kinds of controlled-release urea at a certain rate will benefit the increase of pepper yield and farmers'' income. |
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| Keywords: | hot pepper coated controlled-release urea mixture design N-fertilizer combination rate economic benefit |
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