不同刈割周期、留茬高度对4种柱花草属牧草产量的影响  

Effect of Cutting Cycle and Stubble Height on Forage Yield of Four Varieties of Stylosanthes guianensis

作　　者：李志丹[1] 王文强[1] 陈志权[1] 白昌军[1] 

机构地区：[1]中国热带农业科学院热带作物品种资源研究所农业部热带作物种质资源利用重点开放实验室,海南儋州571737

出　　处：《热带农业工程》2009年第3期10-13,共4页Tropical Agricultural Engineering

基　　金：国家科技支撑计划(No.2008BADB3B08);中央级公益性科研院所基本科研业务费专项"热带牧草种质资源系统评价及创新利用"(No.PZS003)

摘　　要：利用正交试验研究了不同刈割周期、留茬高度对4种柱花草属牧草产草量的影响。试验表明,草种和刈割周期对草产量的影响显著,留茬高度对草产量影响不大,各因素对草产量的影响为:RA>RC>RB,即品系>刈割周期>留茬高度。极差分析得出各因素的最优水平为:A2品系,GC1581柱花草;B4留茬高度,40cm;C2刈割周期,60d。An orthogonal experiment was arranged with 4 varieties of Stylo （Stylosanthes guianensis） which were cut at various stages and stubble heights and compared in forage yield. The results showed that varieties and cutting cycle but not stubble height gave evident influence to forage yield, which was in the order of varieties 〉 cutting cycle 〉 stubble height. Range analysis revealed that the best variety was S. guianensis cv. GC1581 with the optimum cutting cycle and stubble height being 60 days and 40 cm, respectively.

关 键 词：柱花草 刈割周期 留茬高度 产量 

分 类 号：S54[农业科学—作物学]