European grass spreading rapidly by creeping rhizomes; naturalized in North America as a weed 同义词：dog grass, quackgrass, quack grass, quick grass, witch grass, witchgrass, Agropyron repens,
例句与用法
1.
But so far , there have not report about forest soil microbe and soil enzymatic activity in westen sichuan . the study ' s object is bitch forest . spruce forest , fir forest , chrysanthemum alp , willow community and two couch grass , so the research of the soil microorganisma , soil enzymatic activity in the subalpine coniferous forests in western sichuan is significant to china . the result shows that : 1 . in the soil , the relativity of the soil microbial puantity is very prominence , the relation with the quantity of the soil microorganism is that : bacillus > actinomyceto > fungi ; the amount of the microorganism of physiological group sequence ranging from high to low is : aminate > bacteriumazotobacter > denitrify bacterium > nitrobacteria > cellulose decomposing bacteria . under the different vegetable community , the microbial quantity is that : s5 > s7 > s6 > s1 > s2 > s4 > s3 其中，各群落中土壤微生物总数以白桦纯林( s5 )群落最多，每克干土中的含菌量达66 . 13 10 ~ 6个；其次是冷杉针叶林( s7 )群落，每克干土中的含菌量达43 . 41 10 ~ 6个：第三是云杉针叶林( s6 )群落，每克干土中的含菌量达42 . 85 10 ~ 6个；第四是绣线菊-茅草群落( s1 ) ，每克干土中的含菌量达33 . 83 10 ~ 6个；第五是高山柳群落( s2 ) 、茅草( s4 )群落，每克干土中的含菌量分别为33 . 33 10 ~ 6个和33 . 08 10 ~ 6个；第六是茅草群落( s3 ) ，土壤微生物数量最少每克干土中的含菌量仅为23 . 12 10 ~ 6个。
2.
It is general to bind up the fish that is washed clearly with fragrant couch grass at first , then place to roast in the fire , and put on just the right amount of lard , while roasting , the aroma four overflow , the fish flavor that roast out thus come into nostrils , the fish is frailty , the flavor is fresh , beautiful and special 香茅草烤鱼也是一道傣族风味菜。一般先将洗净的鱼裹上味道芬芳的香茅草，然后置于火上烧烤，并抹上适量的猪油，烤时香气四溢，这样烤出来的鱼香味扑鼻，鱼肉酥脆味道鲜美独特。
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