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为有效控制植烟区烟田杂草,于2011—2014年利用诱萌法对四川省主要植烟区土壤杂草种子库的组成及数量进行了研究。结果表明,土壤杂草种子库样品中共有15科24种杂草种子,主要分布于0~15 cm土层中。禾本科杂草为优势种群,其次为菊科杂草,再次为藜科杂草。双子叶杂草种类多于单子叶杂草,但其杂草种子数量明显少于单子叶杂草。广元烟区杂草种子库数量最大,达到19 119粒/m2;攀枝花烟区杂草种子库数量最小,为6 177粒/m2。
In order to effectively control tobacco weeds in tobacco growing areas, the composition and quantity of soil weed seed banks in main tobacco-planting areas in Sichuan Province were studied by using the method of inducing germination in 2011-2014. The results showed that there were 15 families and 24 weed seeds in the soil weed seed bank samples, mainly distributed in 0 ~ 15 cm soil layer. Gramineous weeds as the dominant species, followed by Compositae weeds, again as Chenopodiaceae weeds. Dicotyledonous weed species were more than monocotyledonous weeds, but the number of weed seeds was significantly less than monocotyledonous weeds. The number of weed seed banks in Guangyuan tobacco was the highest, reaching 19 119 grains per m2. The weed seed bank in Panzhihua was the smallest with 6 177 grains per m2.