紫花苜蓿冬播次年高产栽培技术研究  

Research on High-Yielding Cultivation Technology of Wintersowing Lucerne

作　　者：王孝华[1] 阮培均[1] 梅艳[1] 赵明勇[1] 金深逊 邵继庆[1] 熊先勤[3] 

机构地区：[1]贵州省毕节地区农业科学研究所,贵州毕节551700 [2]贵州省毕节地区畜牧兽医科学研究所,贵州毕节551700 [3]贵州省草业科学研究所,贵阳550006

出　　处：《湖北农业科学》2010年第10期2496-2499,共4页Hubei Agricultural Sciences

基　　金：国家科技支撑计划项目(2007BAD53B03);贵州省农业科技攻关计划项目(黔科合NY字[2007]3009号);贵州省农业科学院科研项目(zx[2007]049号)

摘　　要：采用四因子五水平正交旋转组合设计方法,研究播种量及氮、磷、钾肥施用量对冬播紫花苜蓿(Medicago sativa L.)次年鲜草产量的影响,根据试验结果建立鲜草产量与试验因子间的数学模型,经效应分析和计算机模拟寻优,提出紫花苜蓿鲜草产量大于或等于95t/hm2的综合农艺措施为:播种量22.08～24.28kg/hm2、施P2O5量211.22～238.78kg/hm2、施K2O量177.04～197.96kg/hm2,每次刈割后施N量为133.28～166.73kg/hm2。Quadratic regression orthogonal composite design method was used to study the effects of seed quantity, the fertilizer dosage of N, P, K on winter sowing lucerne（Medicago sativa L.） fresh weight. Mathematical model between fresh weight and test factors was set up based on the results. Through effects analysis and simulated optimization, the agronomic measures of lucerne fresh weight was ≥95 t / hm^2, seed quantity was 22.08～24.28 kg / hm^2, dosage of P2O5 was 211.22～238.78 kg / hm^2, dosage of K2O was 177.04～197.96 kg / hm^2, dosage of N after every mowing was 133.28～166.73 kg / hm^2.

关 键 词：紫花苜蓿 栽培技术 鲜草产量 

分 类 号：S541.048[农业科学—作物学]