广西城市草坪杂草的种群及发生调查

以南宁市为中心,对柳州、北海、桂林、玉林和贺州6个广西主要城市的各类草坪杂草种类及发生规律开展了调查研究。结果表明:广西城市草坪共有杂草21科83种,其中优势杂草种类有19种,菊科、禾本科的优势杂草种类最多,分别占优势种群总数的31.6％和26.3％。向阳地生境草坪主要杂草种类为酢酱草和马唐,背阳地生境草坪主要杂草种类为圆果雀稗和空心莲子草,阴潮地生境草坪主要杂草种类为空心莲子草和水沙草。春季草坪主要杂草科为酢酱科和菊科,夏季草坪主要杂草科为禾本科和酢酱科,秋季草坪主要杂草科为禾本科和莎草科,冬季草坪主要杂草科为石竹科和十字花科。

Populations of city truf weeds in Guangxi and their occurrence

There were 83 species, 66 genera and 21 families of city turfs in Guangxi based on the investigations. There are more weeds in Compositae(20 species), Gramineae(18 species) and Cyperaeae(8 species), among which the most harmful weeds were from Compositae and Gramineae. The dominant weeds in different turfs are: Oxalis carniculata and Digi taria sanguinalis in sunny turfs, Paspalum orbiculare and Altemanthera philoxeroides in shadow turfs, and Alternan thera philoxeroides and Juncellus serotinus in moist turfs. The major families in different seasons are: Oxalidaceae and Compositae in spring, Gramineae and Cyperaceae in summer, Gramineae and Cyperaceae in autumn and Caryophyllaceae and Cruciferae in winter. All of these provide the basic data for controlling turf pests.