过渡地区冷暖季型混播草坪种群生物量动态与草坪质量研究初报Ⅰ.混播草坪种群生物量动态与种间竞争  

Study on population dynamic and turf quality of warmseason and coolseason turfgrass mixtures in transition zone .Population biomass dynamic and interspecific competition

作　　者：尹少华[1] 郭学望[1] 

机构地区：[1]华中农业大学林学系

出　　处：《湖北农业科学》1999年第2期31-35,共5页Hubei Agricultural Sciences

摘　　要：以暖季型草坪草狗牙根和冷季型草坪草草地早熟禾为材料，用二因素二次正交旋转组合设计，对９个不同播种比例混播草坪的种群生物量动态及种间竞争进行了研究。结果表明：混播草坪中草地早熟禾生物量均在６月中旬达到高峰，其中有两个处理在１１月中旬达到第二次高峰，其他处理第二次高峰不明显。狗牙根生物量在夏季有明显高峰，为单峰型。３月下旬至５月中旬草地早熟禾竞争力强，６月下旬至９月中旬狗牙根竞争力强。５月下旬至６月中旬，９月下旬至１０月中旬狗牙根与草地早熟禾竞争激烈。In a design of square,regressive and arthogonal rotation with two factors,a field trial was conducted using warmseason Bermudagrass(Cynodon dactylon) and coolseason Kentucky bluegrass(Poa pratensis ).The population biomass dynamic and interspecific competition of 9 mixtures were studied when these two species were sown in different proportion.The results obtained were as follows:The biomass of the Kentucky bluegrass in overall mixtures reached peak in midJune.The treatment C and F had second peak in midNovember,but the other treatments did not have.The biomass of Bermudagrass had an obvious peak in summer.The Kentucky bluegrass had high ability of competition from midMarch to mid May,and so did Bermudagrass from lateJune to midseptember.These two turfgrasses were in keen competition from lateMay to midJune and lateSeptember to midOctober.

关 键 词：过渡地区 混播 生物量 种间竞争 草坪 种群 

分 类 号：S718.556[农业科学—林学] S731