Title

熱帶人工草地群落結構研究初探

Translated Titles

A Preliminary Study on the Community Structure of Tropical Cultured Grassland

Authors

白昌軍(Chang-Jun Bai);劉國道(Guo-Dao Liu);韋家少(Jia-Shao Wei);何華玄(Hua-Xuan He);王東勁(Dong-Jin Wang)

Key Words

草原學 ; 熱帶人工草地 ; 產草量 ; 結構 ; 動態 ; Grassland science ; Tropical cultured grassland ; Herbage output ; Structure ; Dynamics

PublicationName

草地學報

Volume or Term/Year and Month of Publication

12卷1期(2004 / 03 / 01)

Page #

24 - 30

Content Language

簡體中文

Chinese Abstract

研究4年生熱帶人工草地放牧與不放牧對群落結構的影響,結果表明:以熱研2號柱花草和珊狀臂形草為優勢草種的人工草地,其中對照區(不放牧)幹草產量8096kg/hm^2,極顯著高於天然草地116.04%,放牧區6324.5kg/hm^2,顯著高於天然草地68.77%;其產草量呈動態變化,以10月最高;植被群落呈垂直空間層狀分佈,產草量多集中在11~40 cm草層;在放牧區熱研2號柱花草的頻度和產草量減少,珊狀臂形草和有鈎柱花草增加,草種分佈均勻,結構合理,向進展方向演替。

English Abstract

A study was conducted on the influence of grazing and non-grazing on the community structure of cultured quadrennial tropical grassland. The result shows that the cultured grassland with Stylosanthes guianensis cv. Reyan 2 and Brachiaria brizantha as the dominant species boasts higher yield of biomass and nutrient value. The annual hay yield of the non-grazing cultured grassland is 8096 kg/hm^2, and that of the grazing cultured grassland, 6324.5 kg/hm^2; the former is 116.04% higher and the latter 68.77% higher than that of the non-grazing and grazing natural grassland. The yield ascends with the changing seasons, reaching the highest in October. The herbage output rises among grasses of 11~40 cm height. Grazing decreases herbage output and frequency of S. guianensis cv. Reyan 2, yet increases those of B. brizantha cv. Reyan 6 and S. hmata. Tropical cultured grassland consititutes a reasonable structure and distribution of forage species.

Topic Category 生物農學 > 植物學