新疆狗牙根制种田土壤杂草种子库的研究  

Study on seed bank of weeds in Xinjiang bermudagrass seed field

作　　者：于辉[1] 阿不来提[1] 贠静[1] 亚里坤[2] 张延辉[1] 朱昊[1] 阿力木[1] 

机构地区：[1]新疆农业大学草业工程学院,新疆乌鲁木齐830052 [2]新疆农业大学林学院,新疆乌鲁木齐830052

出　　处：《草原与草坪》2007年第6期40-44,共5页Grassland and Turf

基　　金：国家科技支撑计划项目(2006BAD01A19-2-3);自治区高校科研计划项目"草坪牧草兼用新品种‘喀什狗牙根’的推广应用"(XJEDU2005T03);新疆维吾尔自治区重点实验室(XJDX0209-2007-01)资助

摘　　要：对新疆狗牙根制种田土壤杂草种子库进行了研究，结果表明：土壤种子库杂草种类有灰藜（Chenopodium album）、野西瓜苗（Hibiscus trionum）、狗尾草（Setaria viridis）、稗（Echinochloa crusgalli）、反枝苋（Amaranthus retroflexus）、田旋花（Convolvulus arvensis）和扁蓄（Polygonum aviculare）等，均主要分布在0～10cm的土层内，杂草种子量达9180．83粒／m^2，其中又以灰藜、反枝苋为优势种，占杂草总量的50％以上。0～10cm，10～20cm和20～30cm土层杂草种子发芽率均在20％以下，总活力在50％左右。同时，阐述了新疆狗牙根制种田土壤种子库杂草种子的来源，提出了减少杂草种源的对策。Seed bank of weeds in Xinjiang bermudagrass seed field in Xinjiang Province was studied. The resuit show that the primary weed species were Chenopodium album, Hibiscus trionum, Setaria viridis, Echinochloa crusgalli ,Amaranthus retro flexus,Convolvulus arvensis and Polygonum aviculare in soil seed bank,which mainly distributed in 0- 10 cm depth soil in the fields. The total amount of weed seeds in soil were 9 180.83 individuals/m^2 ,and the advantage species were Chenopodium album and Amaranthus retroflexus, with the percentage about 50% in the type. The germination in the three depths of soil were averaged less than 20%. The origin of weed seeds were discussed. Strategies to decrease the seed occurrence of weeds were provided.

关 键 词：新疆狗牙根 制种田 种子库 杂草 

分 类 号：S451.0[农业科学—植物保护] S543