With Longzhou County as example, the weed species, distributions, domi- nant populations and diversity indexes in corn, sugarcane, pineapple, banana and mango fields under different land use patterns in southwest Guan...With Longzhou County as example, the weed species, distributions, domi- nant populations and diversity indexes in corn, sugarcane, pineapple, banana and mango fields under different land use patterns in southwest Guangxi were investi- gated. The results showed that there were 27 families 54 species of weeds in sampling area. Eleven species were Gramineae and ten species were Compositae. There were eight families 13 species in corn fields, ten families 20 species in sug- arcane fields, 12 families 18 species in pineapple fields, ten families 11 species in banana fields and nine families 14 species in mango fields. Bidens bipinnata, Eupa- torium odoratum and Emilia sonchifolia of Compositae were generally occurred with serious harm. Roegneria kamoji, Stellaria media and Bothriochloa intermedia of Gramineae were widely occurred. Weed community made up of Compositae ＋ Gramineae ＋ Oxalidaceae was the main form of dryland weed. The Pielou uniformi- ty of the five use patterns in the studying area were 0.967, 0.964, 0,947, 0.969 and 0.962, respectively, which were high.展开更多
基金Supported by Public Welfare Fund Project of Guangxi(GXNYRKS201506)~~
文摘With Longzhou County as example, the weed species, distributions, domi- nant populations and diversity indexes in corn, sugarcane, pineapple, banana and mango fields under different land use patterns in southwest Guangxi were investi- gated. The results showed that there were 27 families 54 species of weeds in sampling area. Eleven species were Gramineae and ten species were Compositae. There were eight families 13 species in corn fields, ten families 20 species in sug- arcane fields, 12 families 18 species in pineapple fields, ten families 11 species in banana fields and nine families 14 species in mango fields. Bidens bipinnata, Eupa- torium odoratum and Emilia sonchifolia of Compositae were generally occurred with serious harm. Roegneria kamoji, Stellaria media and Bothriochloa intermedia of Gramineae were widely occurred. Weed community made up of Compositae ＋ Gramineae ＋ Oxalidaceae was the main form of dryland weed. The Pielou uniformi- ty of the five use patterns in the studying area were 0.967, 0.964, 0,947, 0.969 and 0.962, respectively, which were high.
