砂生槐一年生播种苗的年生长规律  

The growth dynamic of one-year-old Sophora moorcroftiana seedlings

作　　者：张胜[1] 赵垦田[2] 王景升[2] 

机构地区：[1]西藏大学农牧学院,西藏林芝860000 [2]中国科学院地理科学与资源研究所

出　　处：《林业科技开发》2010年第3期69-71,共3页China Forestry Science and Technology

基　　金："十一五"国家科技支撑项目"拉萨半干旱河谷地带植被建设关键技术研究与示范"(编号:2007BAC06B02)

摘　　要：研究了砂生槐一年生播种苗的年生长规律,结果表明Logistic方程拟合苗木生长规律效果良好,年生长期可划分为4个阶段,分别是出苗期(6月8日以前)、生长初期(6月9日—6月18日)、速生期(6月19日—8月18日)和生长后期(8月19日—10月17日),生长结束时的苗木地下部分与地上部分生物量之比约为3∶1。Tbe Growth rhythm of the one-year-old Sophora moorcrofiiarta seedlings was studied in this paper. The results showed that the growth rhythm of S. moorcrofiiana seedlings was well fitted by the Logistic equation. The annual growth process was divided into four stages of the emergence stage （ before June 8 ） , the young seedling stage （ from June 9 to June 18 ） ,the fast-growing stage （from June 19 to August 18 ） and the later-growth stage （from August 19 to October 17 ）. After the end of the growth, the ratio of root to shoot of one-year-old seedlings was about 3： 1.

关 键 词：砂生槐 苗木 生长规律 LOGISTIC方程 

分 类 号：S792.99[农业科学—林木遗传育种]