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人们似乎都知道哪些植物是杂草。杂草不仅主要指草本植物,还包括有灌木、藤本及蕨类植物等。它们危害农作物和经济作物。这些长错了地方的野生植物都是杂草。杂草的适应性很强,能在多种环境中生长,种子寿命长,能自己控制在不同时期或环境里萌发,以延续其种的生存。杂草生长迅速,能在很短的时间内完成生长周期;若环境适宜时,它可以连续开花结实,有时花序或结实器官的生长量,即重量和高度都超过营养器官的生长量。它们容易自花受
People seem to know which plants are weeds. Weeds not only refers mainly to herbs, but also includes shrubs, rattan and ferns. They endanger crops and cash crops. The wild plants in these long, wrong places are weeds. Weeds adaptability, can grow in a variety of environments, long seed life, can control their own germination in different periods or environments, in order to continue their kind of survival. Weeds grow rapidly and can complete the growth cycle in a very short period of time. If the environment is suitable, it can bloom continuously and steadily. Sometimes the growth of inflorescences or solid organs, that is, the weight and height, exceeds the growth of vegetative organs. They are easy to take care of themselves