为什么人工难以防除水花生?水花生(革命草),其学名为空心莲子草,它属于多年生草本,以根茎进行营养繁殖,3～4月开始萌芽出土。匍匐茎发达,并于节处生根。茎的节段亦可萌生成株,借以蔓延扩散。人工防除的方法,仅能一时控制地上部分,而被割断的茎在地下将加速繁殖。断茎也可随水漂流和动物传播,并迅速在异地生根繁殖,扩大危害面积,加重其危害程度。 Why artificial difficult to control peanut water? Peanut (revolutionary grass), its scientific name is Alternanthera philoxeroides, which belongs to perennial herbs, rhizome vegetative propagation, 3 ~ April germination unearthed. Stolon developed, and rooting at the node. Stems can also be sprouted into segments, in order to spread. Artificial control methods, only a temporary control of the aerial parts, and the severed stems in the ground will accelerate the breeding. Broken stems can also drift with the water and animal transmission, and rapid breeding in different places, expanding the area of ​​?? harm, increasing its harm.