Method for preventing and controlling alien plants of spartina alterniflora Loisel.

Abstract

The invention discloses a method for preventing and controlling alien plants of spartina alterniflora Loisel.. Aiming at the protection for local mangrove plans and sensitivity of the spartina alterniflora Loisel. to acid matrices, organic acid or / and inorganic acid is / are added to improve the acidity of soil, pesticide is sprayed on the day with the lowest tidal level or the low tidal level without rain, or irrigation is conducted when seawater with the height of 1-5 cm is left, so that the spartina alterniflora Loisel. is poisoned by metal ions, wither and die. The method is designed with sufficient consideration and utilization of tide features of mudflats, the method is simple, the operation is easy, raw materials are easy to obtain, and the method is low in cost, takes effect quickly, and is ecological and environmentally friendly; the prevention and control effect is good, the survival rate of mangrove forests can be effectively increased, the planting and breeding management value of coastal and river mudflats is increased, and the method has high economic benefits, social benefits and ecological benefits.

Description

technical field [0001] The invention belongs to the technical field of preventing and controlling foreign plants, relates to a method for preventing and controlling foreign plants, in particular to a method for preventing and controlling foreign plants Spartina alterniflora. Background technique [0002] Spartina alterniflora (scientific name: Spartina alterniflora Loisel.) is a perennial herb of the family Gramineae and Spartina, with a root system up to 100 cm underground. Spartina alterniflora originates from the Atlantic coast of North America. It was rapidly introduced in China in 1979 and is now widely distributed in the coastal tidal flats south of Jiangsu. Spartina alterniflora has a strong reproductive ability, and usually grows in the intertidal zone of estuaries, bays and other coastal tidal flats and on tidal-affected river beaches, and forms a dense single-species community, which competes with the original tidal flat plants for survival. Currently, no local na...

AI Technical Summary

Problems solved by technology

[0003] (1) Destroying the habitat of offshore organisms and affecting tidal flat farming;

[0004] (2) Blocking the channel and affecting the departure of ships;

[0005] ⑶ Affect seawater exchange capacity, leading to decline in water quality and induce red tides; ⑷ ​​Threat to native coastal ecosystems, resulting in the disappearance of large mangrove forests

[0007] (1) The chemical method is spraying with herbicides. Usually, herbicides can only remove the part above the surface, and the effect on the seeds and roots in the tidal flats is poor. In addition, there are concerns about pesticide residues, accumulation and drift;

[0008] (2) Physical control includes manual mechanical cleaning, seawater immersion, etc. This method requires a huge investment in manpower and material resources, and the tidal flat environment is different, so it is not applicable in many places;

[0009] (3) Plant the exotic mangrove plant Spartina apetalum to control Spartina alterniflora. Spartina apetalum is an exotic fast-growing plant and there is a certain risk of spreading. In addition, the ecological niche of Spartina alterniflora on tidal flats is much larger than that of Spartina apetalum Mulberry, many tidal flats are not suitable for the growth of Sangria apetalum