播种期和播种量对百喜草种子产量的影响  

Effect of Sowing Time and Planting Density on Seed Yield of Paspalum notatum Flugge

作　　者：叶川[1] 余喜初[1] 吴水助[1] 熊春梅[2] 熊国根[1] 章彪雄[1] 江生泉[1] 叶会财[1] 

机构地区：[1]江西省红壤研究所,江西进贤331717 [2]江西生物科技职业学院,江西南昌330200

出　　处：《江西农业学报》2008年第8期41-43,共3页Acta Agriculturae Jiangxi

基　　金：2003年国家农业科技成果转化资金项目(03EFN213600135)

摘　　要：研究了不同播种期和播种量对百喜草种子产量的影响。结果表明，春季播种繁种，百喜草（Pensacola A33）从播种到出苗所需要积温（≥10℃）都在290-299 d.℃之间。播种早，气温低，出苗时间长；播种晚，气温高，出苗快。种子产量和种子千粒重以早播、稀播处理为优。同一播种期，30 kg/hm^2处理的种子产量大于60 kg/hm2；播种期推后种子产量下降。The effects of sowing time and planting density on seed yield of Paspalum notatum Flugge were studied.The results showed that： the accumulated temperature for seedling emergence of Pensacola A33 was 290-299 d·℃,the higher the temperature was,the faster the seed sprouted.The seed yield and weight of 1000-grain were the highest with early sowing time and large planting density.For the same sowing time,the seed yield of sowing 30 kg/hm^2 was higher than that of sowing 60 kg/hm^2;the seed yield dropped as sowing time delayed.

关 键 词：百喜草 种子产量 播种期 播种量 

分 类 号：S543.9[农业科学—作物学]