CAJ | 학술논문

选择北过渡带地区有代表性的城市西安,通过观测2008年3-11月期间中华结缕草Zoysia sinica与多年生黑麦草Lolium perenne的盖度和密度的动态变化,研究交播复合群落在共生时间序列上的种群间的竞争.试验期间交播复合群落的群落格局发生2次变化,3-6月结缕草逐渐取代多年生黑麦草成为群落优势种,进入9月多年生黑麦草盖度与密度逐渐增加,再次成为主要草种.试验表明,多年生黑麦草品种匹克与百舸均为合适交播品种;3.5 g/m~2的交播量达到了交播草坪要求;交播复合群落的竞争主要受草坪草遗传特性与外部环境的影响,其中温度因子起关键作用;高频率的低修剪改变了草坪群落的光照和遮蔽条件,对草坪草的竞争力产生了强烈的影响.
선택북과도대지구유대표성적성시서안,통과관측2008년3-11월기간중화결루초Zoysia sinica여다년생흑맥초Lolium perenne적개도화밀도적동태변화,연구교파복합군락재공생시간서렬상적충군간적경쟁.시험기간교파복합군락적군락격국발생2차변화,3-6월결루초축점취대다년생흑맥초성위군락우세충,진입9월다년생흑맥초개도여밀도축점증가,재차성위주요초충.시험표명,다년생흑맥초품충필극여백가균위합괄교파품충;3.5 g/m~2적교파량체도료교파초평요구;교파복합군락적경쟁주요수초평초유전특성여외부배경적영향,기중온도인자기관건작용;고빈솔적저수전개변료초평군락적광조화차폐조건,대초평초적경쟁력산생료강렬적영향.
The competition between zoysia and over-seeded perennial ryegrass was studied in Xi'an, a representative city in north transitional climatic zone, from April to May in 2008 through observing the dynamic change of coverage and density of zoysia and perennial ryegrass. The results indicated that the community pattern of overseeding compound community changed in 2 periods. From April to June, zoysia replaced perennial ryegrass and became the dominant species gradually. After September, the coverage and density of perennial ryegrass increased gradually and became the major species again. Pick and Bige were suitable perennial ryegrass varieties for overseeding and 3.5 g/m~2 was the suitable overseeding rate. The competition was mainly affected by the turfgrass genetic characteristics and the external environment and the temperature played a critical role. High frequency and short stubble of mowing changed the light and shadowing conditions and strongly influenced the competitiveness of turfgrass.