摘要
对8个瑞典能源柳(简称瑞能)不同无性系1年生扦插苗生长动态、苗木生长与气象因子的灰色关联度的研究结果表明,瑞能扦插苗的年生长规律符合Logistic曲线特征,据此方程可以建立苗高、地径与生长的拟合模型,可将苗木生长划分为3个阶段:生长初期、速生期和生长后期,其中处于速生期苗木的高和地径生长量均超过全年总量的55.2%,地径处于速生期阶段长于苗高,但两者生长量占全年总量之比较为接近,分别是56.7%和57.4%;在制约苗木生长的气象因子中,温度是苗木生长的主导因子。
Annual growth dynamics of one-year cutting and relation between growth of Sweden energy willow cutting and the meteorological factors were studied. The result showed that annual growth dynamics of cutting agreed Logistic＇s curve feature. According to this equation, fitting model about height and ground diameter of cutting with meteorological factors could be created. According to Logistic＇s model and continuous growth model of quadratic polynomial, the growing period of cutting could be divided into 3 stages, i.e. initiation phase, prosperous phase, and later phase. The growth of prosperous phase was over 55.2%of total increment. Period of ground diameter＇s initiation phase was longer than that of the height increment. However, the two growth of prosperous phase of the total compared to nearly, respectively 56.7%, 57.4% According to partial correlation analysis, the air temperature is the key factor＇ affecting the growth of cutting among all meteorological factors which restrict the growth of cutting.
出处
《西北农业学报》
CAS
CSCD
北大核心
2009年第1期271-276,280,共7页
Acta Agriculturae Boreali-occidentalis Sinica
基金
国家“十一五”科技支撑项目“商品林定向栽培及高效利用技术研究”(2006BAD18B0102)
国家“十一五”科技支撑课题“植被优化配置与可持续建设技术”(2006BAD09B03)
