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    Chenopodium pumilio a newly naturalized species in China
    铺地藜——中国藜属一新归化种
    After preliminary analysis, results were got as following:(1) Flora: There are 63 families, 236 genera, 427 species and 19 variations vascular plants in the study region, which in the composing of families, Compositae, Gramineae, Leguminosae and Chenopodiacea are preponderant, while in the composing of genera, Artemisia, Astragalus, Chenopodium, Polygonum are preponderant.
    通过初步分析得到以下结论:(1)植物区系:现知研究区的63科、236属、427种、19变种维管束植物中,科的数量组成中菊科、禾本科、豆科、藜科占优势,属则是蒿属、黄芪属、藜属、蓼属等占优势;
    Results of two years' experiments indicate that: When the dibutalin be applied to the alfalfa field at the rate of 3~3.75 kg/ha the kill percentage is 80.5~94.8% for Barnyardgrass (Echinochloa crusgali), Yellow bristlegrass (Setaria lutescens), Amaranth (Arnaranthus) and Goosefoof (chenopodium). Meanwhile, it could increase the dry grass or hay yield by 862. 5~1275kg/ha.
    试验表明,苜蓿田每公顷施地乐胺3~3.75公斤时,对稗草、狗尾草、苋莱、藜属杂草的杀草率为80.5~94.8%,每公顷可增产干草862.5~1275公斤。
    The genera containing more than four C 4 species are Chenopodium, Kochia, Salsola, Cuscuta, Potamogeton, Cleistogenes, Echinochloa, Eragrostis and Cyperus.
    含有 4种以上 C4 植物的属为 9个 ,分别是藜属、地肤属、猪毛菜属、兔丝子属、眼子菜属、隐子草属、稗属、画眉草属和莎草属 .
    Conclusion Air carried pollens mainly come from humulus,pinaceae,populus,Artemisia,chenopodium,salix,ulmus,Gramineae,Kochia,Ailanthus,Ricinus,cupressaceae,walnut,Helianthus,oak,birch,Ginkgoaceae and ragweed. The amount of pollens from humulus,pinaceae,populus,Artemisia and chenopodium accounts for 70% of the total.
    结论  鲁南地区的气传花粉主要包括艹律 草属、松属、杨属、蒿属、藜属、柳属、榆属、禾本科、地肤、臭椿属、蓖麻属、柏科、核桃、向日葵属、栎属、桦属、银杏属、豚草等 ,以 艹律 草、松属、杨属、蒿属、藜属、禾本科花粉量较大 ,占 70 %。
    Chenopodium pumilio R. Br. is reported as a new record of the naturalized weed to China.
    报道中国藜属一新归化种——铺地藜(Chenopodium pum ilioR.Br.)
 

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