K肥对百喜草种子生产能力影响初探  

Primary study on the effects of K fertilizer on seed productivity of Paspalum notatum

作　　者：唐成斌[1] 刘华荣 龙忠富[1] 杨义成[1] 

机构地区：[1]贵州省草业科学研究所,贵州独山558200 [2]贵州省畜牧兽医科学研究所,贵州贵阳550002

出　　处：《草业科学》2006年第10期50-52,共3页Pratacultural Science

摘　　要：试验以百喜草Paspalum notatum种质资源为材料,通过施用不同浓度的K肥,测定和分析K肥对百喜草种子生产能力的影响。结果表明,分2次施用7.5 g/m2K2O处理效果最佳,使生殖枝出现较集中,生殖枝数增加了22%,使花序长度、小穗数分别增加了4.36%和17%,提高了百喜草潜在种子产量;同时结实率增加了16%,种子的千粒重和生活力都有明显的增加,有效提高了百喜草种子产量与质量。Different application rate and time of K fertilizer was conducted to test its effects on seed productivity of Paspalum notatum. The results showed that the treatment of applying 7.5 g/m2 K20 in two times gave the best performance. The reproductive tillers increased 22%, length of panicle and number of spikelet increased 4.36% and 17%, respectively, which increased seed yield by 16%. Thousand-kernel-weight and seed vigor significantly increased, both seed yield and quality were incremented.

关 键 词：百喜草 K肥 种子生产能力 

分 类 号：S543.9[农业科学—作物学] S688.4