| 黑麦草高产栽培技术研究 |
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| 引用本文： | 孙学映,刘春英,朱体超,陈光蓉.黑麦草高产栽培技术研究[J].广西农业科学,2013(7):1105-1109. |
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| 作者姓名： | 孙学映 刘春英 朱体超 陈光蓉 |
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| 作者单位： | [1]重庆三峡农业科学院 [2]重庆三峡职业学院,重庆万州404155 |
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| 基金项目： | 重庆三峡农业科学院科技计划项目（SAAS10G-1） |
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| 摘 要： | 【目的】研究种植密度、施肥量和刈割次数对黑麦草产量的影响,为黑麦草高产栽培技术提供措施。【方法】采用五元二次回归正交旋转组合设计,建立黑麦草干草产量（y）与种植密度（x1）、N（x2）、P2O5（x3）、K2O（x4）和刈割次数（x5）之间的数学模型,并模拟寻优。【结果】经回归分析,得到黑麦草干草产量（y）与五因子（x）间的回归方程为：y=29861.05＋205.42x1＋1147.51x2＋327.55x3-23.07x4-787.03x5-956.48x12-833.09x22-693.68x32-695.56x42-1076.17x52＋215.13x1x2＋167.78x1x3-133.28x1x4-84.35x1x5＋142.74x2x3-87.91x2x4-67.82x2x5-154.31x3x4-50.49x3x5-246.39x4x5。采用种植密度317.63万～325.27万苗/ha、纯N138.09～145.17kg/ha、P2O525.88～28.12kg/ha、K2O87.21～92.79kg/ha、生育时期刈割3次（抽穗期前后刈割）的综合技术措施,可获得高于27024.40kg/ha的干草产量。【结论】在重庆三峡库区黑麦草实际生产上,需适当增施N肥、降低种植密度和控制刈割次数,其他地区应根据土壤肥力、气候条件和其他因素作相应调整。
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| 关 键 词： | 黑麦草 高产 栽培技术 数学模型 |
Study on high-yield cultivation techniques of rye grass |
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| SUN Xue-ying,LIU Chun-ying,ZHU Ti-chao,CHEN Guang-rong.Study on high-yield cultivation techniques of rye grass[J].Guangxi Agricultural Sciences,2013(7):1105-1109. |
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| Authors: | SUN Xue-ying LIU Chun-ying ZHU Ti-chao CHEN Guang-rong |
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| Institution: | 1Chongqing Three Gorges Academy of Agricultural Sciences, Wanzhou,Chongqing 404155, China; 2Chongqing Three Gorges Vocational Colleage, Wanzhou, Chongqing 404155, China) |
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| Abstract: | Objective]The effects of plant density, fertilization and cutting frequency on rye grass yield were studied to develop high-yield cultivation technical measures. Method]Using quadratic regression orthogonal rotation combination design of five factors, mathematical models between dry yield （y）, planting density（x1, N（x2）, P2O5（x3）, K2O（x4） application amount, and cutting frequency （x5） were established for simulation optimization. Result]According to the results of regression analysis, the regression equation between rye grass yield and the five factors （x） was y=29861.05＋205.42x1＋1147.5 1x＋327.55x3-23.07xc- 787.03x5 -956.48x32 -833.09x2 2 -693.68x32 -95.56x42 -1076.17x52 ＋215.13x1x2 ＋167.78X1X3 -133.28X1X4 -84.35X1X5 ＋ 142.74x2x3 - 87.91X2Xn-67.82XzXs-154.3 1x3x4-50.49x3xs-246.39x4x5. Using the comprehensive agricultural measures with planting density of 3.17-3.25 ten thousand/ha, pure N 138.09-145.17 kg/ha, P2O5 25.88-28.12 kg/ha, K2O 87.21-92.79 kg/ha and 3 times of mowing during whole growth stages （before or after heading stage cutting）, the yield was over 27024.40 kg/ha. Conclusion]For local rye grass production, there should be more N fertilizers, wider plant distance and controlled cutting times, while regarding adjustment in other regions, soil fertility, climate conditions and other factors should be taken into account. Key words ： rye grass ; high-yield ; cultivation techniques ; mathematic model |
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| Keywords: | rye grass high-yield cultivation techniques mathematic model |
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