臺灣博碩士論文加值系統

為了加速草坪的建立及提高草坪培育期間雜草的有效管理，本論文共進行
三項研究：（1）韓國草(Zoysia matrella (L.) Merr.)與假儉草(
Eremochloa ophiuroides (Munro) Hack.)生長分析與氮肥試驗，以瞭解
草坪草之生長勢與最適當之施肥時期；（2）探討不同殺草劑組合與劑量
，對於百慕達草（Cynodon dactylon L.）Tifdwarf品系、假儉草與韓國
草草坪培育初期之雜草防除效果；（3）瞭解草坪移植前施用殺草劑，對
移植後草坪草發根的影響。試驗結果摘要如下：1. 假儉草與韓國草移植
後一週尚處於生長遲滯期，但隨後生長加速，於移植後第三週即達最大相
對生長速率（RGR），分別為 0.05 及 0.31 g g-1 day-1。此時假儉草與
韓國草草長分別為7.8 - 11.4 cm 及 2.5-3.5 cm，可作為田間施肥時機
的指標。2. 韓國草於移植後四週施用80 kg/ha氮肥，於移植後八週，其
雜草覆蓋率為35﹪，顯著低於不施肥之60﹪及在移植時即施用80 kg/ha氮
肥之70﹪。反之，於移植後四週施用氮肥，草坪草覆蓋率為52﹪，顯著高
於不施肥之24﹪或移植時施肥處理之28﹪。3. 由百慕達草、假儉草與韓
國草草坪培育初期，施用不同殺草劑與用量組合的試驗結果發現，百慕達
草Tifdwarf品系草坪中施用pendimethalin ＋2,4-D（ 1.7 ＋ 1.6 kg /
ha）、假儉草施用oxadiazon 1.7 kg / ha +quinclorac 0.5 kg / ha及
韓國草施用pendimethalin ＋2,4-D（ 1.7 ＋ 1.6 kg / ha）兩週後，雜
草防除率大於 90﹪，同時藥害等級小於3。4.百慕達草Tifdwarf品系苗圃
於移植前四週施用quinclorac + metribuzin + alachlor
(0.5+0.25+1.5)，不會對移植後之草塊發根產生影響，可使草坪迅速建立
。另各殺草劑組合均會顯著降低假儉草與韓國草移植草塊之根系發育，但
於假儉草苗圃施用oxadiazon + quinclorac + metribuzin
(1.7+0.5+0.25)或於韓國草苗圃施用pendimethalin＋prazosulfuzon-
ethyl＋2,4-D（ 1.7＋0.15＋1.6）四週後移植者，可使根系生長不受影
響。

For turf establishment and weed management , there were three
experiments conducted in this studies：(1) to find out the
adequate timing of nitrogen application based on the growth
analysis of centipedegrass and zoysiagrass, (2) to evaluate weed
control efficacy of the rate and combination of preemergence and
postemergence herbicides in the centipedegrass, zoysiagrass and
bermudagrass, (3) to know the rooting characters of those
grasses from sod plug after transplanting as influenced by those
herbicides which were previously applied in sod field. Results
were summarized as follows:1. The growth of centipedegrass and
zoysiagrass was slowly at 1 week after transplanting. Both
grasses showed maximum relative growth rate (RGR) at 3 weeks
after transplanting. The RGR of centipedegrass and zoysiagrass
were 0.05 and 0.31 g g-1 day-1, respectively. The plant height
of centipedegrass and zoysiagrass, 7.8 - 11.4cm and 2.5-3.5 cm
respectively, is a reasonable field indicater for best time to
apply nitrogen for those turfgrasses.2. At 8 weeks after
zoysiagrass transplanting, weed coverage (35﹪) in N 80 kg/ha
applied at 4 weeks after transplanting was less than 60﹪ in
non-fertilized treatment and 70﹪in N 80 kg/ha applied at
transplanting. At 8 weeks after zoysiagrass transplanting,
zoysiagrass coverage(52﹪) in N 80 kg/ha applied at 4 weeks
after transplanting was less than 24﹪ in non- nitrogen
treatment and 28﹪in N 80 kg/ha applied at the initial
transplanting.3. Results from the experiments of different
herbicides and rates applied in bermudagrass, centipedegrass and
zoysiagrass turf. It was found that weed control was above 90﹪
when tank mixed with pendimethalin + 2,4-D (1.7+1.6 kg/ha ) was
applied in bermudagrass cv. 'Tifdwarf', oxadiazon +quinclorac
(1.7 + 0.5 kg / ha) in centipedegrass and pendimethalin ＋2,4-D
（ 1.7 ＋ 1.6 kg / ha） in zoysiagrass. Turf injury rating of
those herbicide combinations was acceptable .4. The rooting of
bermudgrass plugs was not affected by the application of
quinclorac + metribuzin + alachlor (0.5+0.25+1.5kg/ha) in
bermudagrass in sod field 4 week before transplanting. However
herbicide combinations reduced the root development of
centipedegrass and zoysiagrass plugs ，the root growth of both
grasses can be recovered 4 weeks after oxadiazon + quinclorac +
metribuzin (1.7+0.5+0.25 kg / ha) combination in centipedegrass,
and pendimethalin＋prazosulfuzon-ethyl＋2,4-D ( 1.7＋0.15＋1.6
kg / ha) combination in zoysiagrass.