The Control Technology Of Smooth Cordgrass (Spartina Alterniflora Loisel)

This study was conducted between2004-2009. Due to the harmful plants of the alien species spartina alterniflora grew rapidly in Fujian coastal beach and which caused great disasters in social economic and ecological environment, our research major in the biological characteristics and environmental hazards for the alien species spartina alterniflora; We chose different coastal waters from the Ninde, Luoyuan, Mawei and Langqi for the management test. Comparing the methods of the artificial excavation, biological control, chemical prevention and other various treatments, we found the most effective way to control the alien species spartina alterniflora by using the most safety and low toxicity chemical called "In addition to tidal Spartina control agent". We summarized the operating rules for how to using this chemical through the test of different times with different doses to identify the best treatment and the optimal dose of pesticide application; We study how to plant mangrove in the track of management area:We made detection on seafood residue and also made assessment on seafood bleeding environments on the control area; Through the above research, we summarized a fast, thorough, simple, safe and efficient technology to manage the spartina alterniflora. The study results include as below:1.The result of management of the spartina alterniflora is remarkable. Using the chemical of "In addition to tidal Spartina control agent" in multi-regional with multi-method treatment, the results are obvious. We found there were no regeneration of spartina alterniflora where was sprayed by chemical one times, it identify that the effect was permanent and overall efficiency of weeding went to100%.2. We have long period of operate. During the period from April to October each year, we can mow the Spartina by machine, and we can spray the chemical after the Spartina grows to the length of40-60CM. in this way the total time for managing Spartina can be7months through one year.3. The environment of management area is friendly. The environment in the management area is safe and friendly for culture sinonovacula constricta, mud clam and other aquatic organisms, and no residues detected by the authority department.4.Create mangrove and recovering wetland and its ecological. To create mangroves in the track will help to recover wetland and its ecological and restore the economic value of fisheries.