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空心莲子草是广东的重要入侵植物之一,在广东的大部分地区均有分布,对广东的农业、水上交通、自然生态等产生较大的危害.文章对空心莲子草的历史阶段与特点进行研究可对其生长习性、入侵规律有更好的了解,有利于对其进行更好的防治与利用.空心莲子草在广东的入侵共分为三个历史阶段,第一阶段为引进与逸生时期(1970-1979年),野生种群规模小、分散,对广东的地区的危害不大;第二阶段为建立种群与快速蔓延时期(1980-1999年),入侵范围的不断增加,危害较大,莲草直胸跳甲对防治空心莲子草产生了一定防控作用;第三阶段为大规模危害与开发利用时期(2000年至今),种群规模更大、危害的生境不断增加、危害范围进一步扩散,但防治技术并有一定程度的提高.
Alternanthera philoxeroides is one of the most important invasive plants in Guangdong, which distributes in most parts of Guangdong, which has a great harm to agriculture, water traffic and natural ecology in Guangdong.The article makes an analysis of the history stages and characteristics of Alternanthera philoxeroides The study can know more about its habit of growth and invasion, which is beneficial to its prevention and utilization.It is divided into three stages of history: the first stage is the introduction and the second stage (1970-1979), the small-scale and dispersal of wild populations had little impact on the Guangdong area. The second stage was the establishment of the population and rapid spread period (1980-1999) Lactylifera straightforward to prevent and control Alternanthera philoxeroides have a certain degree of prevention and control; the third phase of large-scale hazards and the development and utilization of the period (2000 to date), the larger population, increasing habitat damage, the scope of further proliferation , But prevention and treatment technology and to some extent improve.