摘要
试验以优良的峨眉假俭草种质资源为材料 ,通过施不同浓度的K肥 ,测定分析K肥对假俭草种子生产能力的影响。结果表明分两次施用 7.5 g·m-2 K2 O处理效果最佳 ,使生殖枝出现较集中、生殖枝数增加了 2 2 % ,使花序长度、小穗数分别增加了 4.3 6%、17% ,提高了假俭草潜在种子产量。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 ,提高了假俭草种子产量与质量。
By applying potassium with different densities to centipedegrass ,the results show: 7.5 g·m -2 K 2O in two applications is best. It makes fertile tiller concentration, and increases the number of fertile tiller, inflorescence length and spikelet by 22%, 4.36% and 17%, respectively. Therefore, the treatment may increase potential seed yield of centipedegrass. Meanwhile, the treatment increases seed setting rate by 16%, and obviously improves 1 000-grain weight and seed vigor. Therefore, 7.5 g·m -2 K 2O in two applications makes seed yield and quality better.
出处
《种子》
CSCD
北大核心
2004年第8期19-21,共3页
Seed
基金
四川省青年基金项目 (0 2ZQ0 2 6 0 57)资助
关键词
钾肥
假俭草
种子生产能力
草坪草
Centipedegrass Potassium Seed production capability
