| K肥对百喜草种子生产能力影响初探 |
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| 引用本文： | 唐成斌,刘华荣,龙忠富,杨义成.K肥对百喜草种子生产能力影响初探[J].草业科学,2006,23(10):50-52. |
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| 作者姓名： | 唐成斌 刘华荣 龙忠富 杨义成 |
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| 作者单位： | 贵州省草业科学研究所,贵州,独山,558200;贵州省畜牧兽医科学研究所,贵州,贵阳,550002 |
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| 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。
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| 关 键 词： | 百喜草 K肥 种子生产能力 |
| 文章编号： | 1001-0629（2006）10-0050-03 |
| 收稿时间： | 08 23 2005 12:00AM |
| 修稿时间： | 2005-08-23 |
Primary study on the effects of K fertilizer on seed productivity of Paspalum notatum |
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| TANG Cheng-bin,LIU Hua-rong,LONG Zhong-fu,YANG Yi-cheng.Primary study on the effects of K fertilizer on seed productivity of Paspalum notatum[J].Pratacultural Science,2006,23(10):50-52. |
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| Authors: | TANG Cheng-bin LIU Hua-rong LONG Zhong-fu YANG Yi-cheng |
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| Institution: | 1. Guizhou Grassland Science Research Institute, Dushan, 558200; 2. Guizhou Animal Husbandry and Veterinary Research Institute, Guiyang, 550002 |
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| Abstract: | 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/m~2 K_2O 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. |
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| Keywords: | Paspalum notatum K fertilizer seed productivity |
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