摘要
本文是利用地三叶草作为测试品种,用粤北示范牧场的表土进行的镁、石灰、硼2×2×2多因子盆栽试验。结果表明,镁肥使土壤交换性镁增加一倍,镁饱和度增至大于3%,Mg/k 比率提高到大于1.0;石灰使交换性钙增加一倍,铝饱和度下降到小于1%;施镁使地三叶草的产量显著提高(P<0.01),但不受石灰或硼肥的影响;缺镁症状与产量和植物组织含镁量有关(R^2>0.83)。
Using subterranean clover(Trifollum subterraneum) CV Nungarin as a test species,a 2×2×2 factori- al pot experiment with Mg,Lime,and B treatments on surface soil collected from lechang Model cattle Farm.The results showed that Mg fertilizer doubled exchangeable nag,increased Mg saturation to>3% and raised Mg/k ratio to>1.0;lime application doubled exchangeable Ca and reduced Al saturation to< 1%;clover yield increased <p<0.01>wity Mg application,but was not affected by lime or B fertilizer; synaptona scores for Mg deficiency were correlated with yield and tissue Mg<R^2>0.83>.
出处
《草业科学》
CAS
CSCD
北大核心
1992年第6期43-47,共5页
Pratacultural Science
关键词
地三叶草
施肥
石灰
镁肥
硼肥
subtropica
Ultisols
Mg deficiency
subterranean clover
Lime
boron
Mg/k ratio
