论文部分内容阅读
从 19971998对雅安市区内冷季型草坪中的杂草进行了调查 ,从而确定冷季型草坪中常见杂草的种类及其出现的规律性。结果表明 ,常见的草坪杂草隶属 2 2科有 37种 ,其中 ,莲子草 (革命草 )(Alternantheraphiloxeroides)、酢浆草 (Oxaliscorniculata)、婆婆纳 (Veronicaagrestis)、车前 (Plan tagoasiatica)、缘毛卷耳 (Cerastiumfurcatum)、繁缕 (Stellariamedia)最为常见 ,它们同时为杂草中的优势种。 45月和 910月是杂草出现的高峰期 ,春末夏初草坪中的杂草种类多、数量大 ,危害最为严重。
From 19971998 we investigated the weeds in the cold-season lawns in Ya’an urban area to determine the types of common weeds in the cold-season lawns and their regularity. The results showed that there were 37 common lawn weeds in 22 families, among which Alternanthera philoxeroides, Oxaliscorniculata, Veronica agrestis, Plan tagoasiatica, Cerastium furcum and Stellariamedia are the most common species, and they are also the dominant species in weeds. 45 and the month of September is the peak of weeds appeared. There are many kinds of weeds in the lawn of early spring and early summer with a large quantity and the most serious damage.