稻田恶性杂草野荸荠的生长发育及其在贵州的分布  

Reproduction and Distribution of Wild Water Chestnut (Eleocharis plantagineiformis) in Guizhou

作　　者：何永福[1] 何占祥[2] 

机构地区：[1]贵州省农业科学院植物保护研究所 [2]贵州省农业科学院科研处,贵阳550006

出　　处：《贵州农业科学》2002年第1期37-39,共3页Guizhou Agricultural Sciences

基　　金：贵州省年度攻关项目 [黔科合农字 (2 0 0 0 ) 1116号 ]

摘　　要：野荸荠为区域性较强的稻田恶性杂草 ,在所调查的 2 2个县 (市 )中 ,以贵阳、湄潭、桐梓等地发生频率较大 ,为 88%～ 4 4% ,贵阳地区发生危害最重。野荸荠茎秆生长迅速 ,1m2内能产生茎秆数 1333.3株 ,重 16 71g;球茎繁殖力较强 ,1粒球茎在一个生长季节内能形成新球茎 10 9粒 ,平均每粒重 0 .986 2 g;野荸荠花序也能产生种子 ,每束花序内种子数 0～ 7粒不等 ,平均 2 .Wild water chestnut (Eleocharis plantagineiformis) is a regional wicked weed in paddy field. According to investigation in twenty two counties (or cities) of Guizhou, its frequency of occurrence is very high, amounting to 88%～44% in Guiyang, Meitan and Tongzi. Wild water chestnut grows speedily and its average number of total straws reaches 1 333.3, weighing 1 671 g per square metre. Its bulb has stronge reproductivity and each bulb of it can develop 109 new bulbs, weighting 0.9862 g in average within a growth season. Its flower head forms seeds averaging 2.9 seeds for each head.

关 键 词：野荸荠 稻田杂草 生长发育 分布 贵州 

分 类 号：S451.0[农业科学—植物保护]