摘要
在已成坪的结缕草草坪上，按１０ｇ／ｍ２、２０ｇ／ｍ２、３０ｇ／ｍ２和４０ｇ／ｍ２播量在秋季交播高羊茅，连续３年按月测定群落中高羊茅和结缕草的密度、盖度和频度，进而探讨较为适宜的交播量和各种交播量的交播效果。４种交播量中以１０ｇ／ｍ２为最佳；增加交播高羊茅播量会显著增加高羊茅的密度（Ｐ＜０．０５）及程度不同的增加其盖度和频度（Ｐ＞０．０５），但却明显地降低了结缕草的密度、盖度和频度（Ｐ＜０．０５），使高羊茅的种群竞争能力加强而结缕草的竞争能力减弱，使草坪群落趋向于向高羊茅不同个体组成的单一草坪群落方向演替。
An autumn overseeding trial with tall fescue (Festuca arundinacea) over established zoysiagrass (Zoysia japonica) turf was conducted in September through 1994-97 at seeding rates of 10,20,30 and 40 grams per square meter in Chengdu which is located in a typical climatic transition zone in China. The density, coverage and frequency of the two species were measured monthly during the trial and it was shown that the seeding rate of 10 grams of fescue per square meter was optimal. Increasing seed amount used would significantly increase the density of fesuce (P<0.05) and, to a varying extent, its coverage and frequency (P> 0.05 ) in the mixture, leading to a dramatic decline (P<0.05) in all these indices for zoysiagrass and an unwanted succession of the plant community toward a monostand one of tall fescue.
出处
《草业学报》
CSCD
1998年第3期56-61,共6页
Acta Prataculturae Sinica
关键词
结缕草
交播
草坪
zoysiagrass
tall fescue
overseeding
succession
