"植物无性繁殖" can be translated into English as "vegetative propagation of plants" or simply "plant vegetative propagation".
Here, "vegetative" refers to the non-reproductive, growth-related parts of a plant (such as stems, leaves, or roots), and "propagation" means the process of multiplying or reproducing. Together, they describe the asexual reproduction method in plants where new individuals are produced from vegetative parts without the involvement of seeds or spores.