南方农业学报2013，Vol.44Issue(7)：1105-1109,5.DOI:10.3969/j:issn.2095-1191.2013.7.1105
黑麦草高产栽培技术研究
Study on high-yield cultivation techniques of rye grass
摘要
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+1147.51 x2+327.55x3-23.07x4-787.03x5-956.48X1-833.09x2-693.68x32-69556x42-1076.17x52 +215.13x1x2+167.78X1X3-133.28x1x4-84.35x1x5 +142.74x2x3-87.91x2x4-67.82x2x5-154.31x3x4-50.49x3x5-246.39x4x5.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 kggha,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.关键词
黑麦草/高产/栽培技术/数学模型Key words
rye grass/ high-yield/ cultivation techniques/ mathematic model分类
农业科技引用本文复制引用
孙学映,刘春英,朱体超,陈光蓉..黑麦草高产栽培技术研究[J].南方农业学报,2013,44(7):1105-1109,5.基金项目
重庆三峡农业科学院科技计划项目(SAAS10G-1) （SAAS10G-1）
