【摘 要】
：
如何确定一种生物是有害还是有益,并不取决于其本身,而是在于它在一个时期内或在一定范围内对人类的经济生活是否有利用价值或有害作用。那么空心莲子草是有益还是有害,是加
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如何确定一种生物是有害还是有益,并不取决于其本身,而是在于它在一个时期内或在一定范围内对人类的经济生活是否有利用价值或有害作用。那么空心莲子草是有益还是有害,是加以利用还是予以控制,近年来说法不一,值得深入研究,正确评价。
How to determine whether an organism is harmful or beneficial does not depend on itself but on whether it has a value or harmful effect on the economic life of mankind for a certain period of time or to a certain extent. So is Alternanthera philoxeroides beneficial or harmful, is to be used or to be controlled, in recent years have different opinions, it is worth in-depth study, the correct evaluation.
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