摘要
根据植物种群生态学原理，利用组织物质循环技术，对羊茅黑麦草和无芒雀麦的叶片出现、伸长、枯萎和死亡动态进行了研究。结果表明，两种牧草累积总叶数和累积总叶长度均呈“Ｓ”型曲线规律，净绿叶片数和净绿叶长度动态呈抛物线规律变化，叶片死亡数和叶枯萎长度在生长初期为零然后呈直线规律累积。据此，提出了通过调节刈牧时间、频率和利用间期，科学利用草地的刈牧制度。
The dynamics of leaves appearance,extension, senescence and death were studied with the method of tissue turnover based on the theory of plant population ecology.The results showed that the gross number and length showed sigmoid curve pattern,and the dynamic of net green leaves number and length was parabola.The leaf numbers of death and the length of withered leaves were none at the beginning of growth, then they accumulated in linear pattern.According to the above the paper has put forward adjusting the cutting time,frequency and using interval to scientifically utilize grazing and cutting of grassland
出处
《草业科学》
CAS
CSCD
北大核心
1996年第1期8-10,共3页
Pratacultural Science
基金
国家自然科学基金
关键词
羊茅黑麦草
无芒雀麦
叶片生长
草地利用
Fescue/Ryegrass
smooth bromegrass
leaf growth
mathematical model
grassland utilization
