常見(jiàn)例句Green bristlegrass was dominant species,and fat hen and cockspur grass were subdominant species. 研究區(qū)內(nèi)有野生草本植物25種,其中優(yōu)勢(shì)種群是狗尾草種群,亞優(yōu)勢(shì)種群為灰菜、稗草種群。On the early days of planting vegetation,we advise that the sanitary landfills introduce green bristlegrass,fat hen and cockspur grass at the same time of sodding. 建議在衛(wèi)生填埋場(chǎng)植被建設(shè)初期,在種植人工草皮的同時(shí),適當(dāng)?shù)匾牍肺膊?、稗草、灰菜等野生?yōu)勢(shì)種,使野生草本群落逐漸替代人工草坪;Cyhalofop-butyl is highly effective in controlling cockspur grass, chinese sprangletop and it can also control crab grass, green bristlegrass, goosegrass, etc. 氰氟草酯對(duì)稗草等禾本科雜草效果優(yōu)良,對(duì)千金子、雙穗雀稗具有特別功效。The result showed10%Caowei weeded widely,had specially good effect on sedge family and broadleaf weeds and cockspur grass,the total effect of10%Caowei15g /667m 2 was6.8%more than10%Caokexing,22.2%more than10%Yikejing,improved17.9%in output than blank. 結(jié)果表明;10%25草威殺草譜廣;對(duì)莎草科和闊葉雜草有特效;對(duì)稗草有極強(qiáng)的抑制使用。 10%25草威15g/667m2總防效比10%25草克星提高6.;8%25;比10%25一克凈提高22gulf cockspur 孔雀稗Florida cockspur 籽粒莧 返回 cockspur