糙叶丰花草种子发芽特性研究  

Studies on seeds germination of Borreria articularis

作　　者：龚家建[1] 杨小锋[1] 杨雨祚 GONG Jia-jian;YANG Xiao-feng;YANG Yu-zuo(Sanya Sci-Tech Academy for Crop Winter Multiplication,Sanya 572000,China;Hainan Agriculture School,Haikou 571101,China)

机构地区：[1]三亚市南繁科学技术研究院,海南三亚572000 [2]海南省农业学校,海南海口571101

出　　处：《广东农业科学》2018年第4期57-62,共6页Guangdong Agricultural Sciences

基　　金：海南省三亚市农业科技创新项目(2016NK02)

摘　　要：糙叶丰花草为海南本地常见的草本植物,适宜在热带果园作为草种生草栽培。为提高对糙叶丰花草种子的认识,为引种栽培提供技术支撑,研究了其种子的特性和发芽规律。结果表明:糙叶丰花草种子千粒重2.28 g,含水率22.93%,无硬实现象;种子存在初生休眠现象,休眠期长短不一;破除种子休眠的适宜方法是采用浓度150~300 mg/L 赤霉素浸种24 h,而采用热水浸种的效果不明显;种子发芽最适宜的温度为30~35℃,最佳土壤相对含水量为30%~50%,播种深度在6 cm以上时出苗率较高。因此,建议在播种糙叶丰花草前,预先采用浓度150~300 mg/L赤霉素浸种24 h处理,播种时避开低温季节,深度以6 cm以上为宜,同时避免浇灌过量,有利于种子萌芽出苗。Borreria articularis（Linn.f.） F N Williams is a common herbaceous plant used widely in tropical orchard china in Hainan Province,The paper studied the characteristics of germination of B. articularis（L.f.） F. N. Williams seed. Results indicated that ：the 1000-seed weight was 2.28 g,the moisture content of the seed was 22.93%,and had no hard to cook phenomenon. The seed had primary dormancy,the dormant period varied. The best method of sreak seed dormancy was that seeds treated with 150-300 mg/L GA3 for 24 hours,and the effect of soaking seeds with hot water was not significant. The optimum temperiture for the seed sprouting was 30-35℃,the optimum soil water content was 30%-50%,and the seedling rate increased with increase sowing depth up to 6 centimeters. Therefor,it is recommended that soaded seeds priviously with 150-300 mg/L GA3 for 24 hours before sowing,avioded low temperiture and excessive watering during sowing,it is also advisable to sowed seeds at the depth 6 centimeters and more,which was beneficial to seedling.

关 键 词：糙叶丰花草 果园生草 种子发芽 休眠 土壤相对含水量 

分 类 号：S451[农业科学—植物保护]